diff --git a/docs/changelog/118103.yaml b/docs/changelog/118103.yaml
new file mode 100644
index 0000000000000..c0bb8f56d6931
--- /dev/null
+++ b/docs/changelog/118103.yaml
@@ -0,0 +1,11 @@
+pr: 118103
+summary: "Remove any references to org.elasticsearch.core.RestApiVersion#V_7"
+area: Infra/Core
+type: breaking
+issues: []
+breaking:
+  title: "Remove any references to org.elasticsearch.core.RestApiVersion#V_7"
+  area: REST API
+  details: "This PR removes all references to V_7 in the Rest API. V7 features marked for deprecation have been removed."
+  impact: "This change is breaking for any external plugins/clients that rely on the V_7 enum or deprecated version 7 functionality"
+  notable: false
diff --git a/libs/core/src/main/java/org/elasticsearch/core/RestApiVersion.java b/libs/core/src/main/java/org/elasticsearch/core/RestApiVersion.java
index 672090d195c5a..085887fdcdb0c 100644
--- a/libs/core/src/main/java/org/elasticsearch/core/RestApiVersion.java
+++ b/libs/core/src/main/java/org/elasticsearch/core/RestApiVersion.java
@@ -20,10 +20,7 @@ public enum RestApiVersion {
 
     V_9(9),
 
-    V_8(8),
-
-    @UpdateForV9(owner = UpdateForV9.Owner.CORE_INFRA) // remove all references to V_7 then delete this annotation
-    V_7(7);
+    V_8(8);
 
     public final byte major;
 
@@ -54,7 +51,6 @@ public static Predicate<RestApiVersion> equalTo(RestApiVersion restApiVersion) {
         return switch (restApiVersion) {
             case V_9 -> r -> r.major == V_9.major;
             case V_8 -> r -> r.major == V_8.major;
-            case V_7 -> r -> r.major == V_7.major;
         };
     }
 
@@ -62,15 +58,11 @@ public static Predicate<RestApiVersion> onOrAfter(RestApiVersion restApiVersion)
         return switch (restApiVersion) {
             case V_9 -> r -> r.major >= V_9.major;
             case V_8 -> r -> r.major >= V_8.major;
-            case V_7 -> r -> r.major >= V_7.major;
         };
     }
 
     public static RestApiVersion forMajor(int major) {
         switch (major) {
-            case 7 -> {
-                return V_7;
-            }
             case 8 -> {
                 return V_8;
             }
diff --git a/server/src/main/java/org/elasticsearch/action/ingest/SimulatePipelineRequest.java b/server/src/main/java/org/elasticsearch/action/ingest/SimulatePipelineRequest.java
index d6a2d81fdb7d3..02027b1f633d2 100644
--- a/server/src/main/java/org/elasticsearch/action/ingest/SimulatePipelineRequest.java
+++ b/server/src/main/java/org/elasticsearch/action/ingest/SimulatePipelineRequest.java
@@ -177,7 +177,7 @@ private static List<IngestDocument> parseDocs(Map<String, Object> config, RestAp
             String index = ConfigurationUtils.readStringOrIntProperty(null, null, dataMap, Metadata.INDEX.getFieldName(), "_index");
             String id = ConfigurationUtils.readStringOrIntProperty(null, null, dataMap, Metadata.ID.getFieldName(), "_id");
             String routing = ConfigurationUtils.readOptionalStringOrIntProperty(null, null, dataMap, Metadata.ROUTING.getFieldName());
-            if (restApiVersion != RestApiVersion.V_8 && dataMap.containsKey(Metadata.TYPE.getFieldName())) {
+            if (dataMap.containsKey(Metadata.TYPE.getFieldName())) {
                 deprecationLogger.compatibleCritical(
                     "simulate_pipeline_with_types",
                     "[types removal] specifying _type in pipeline simulation requests is deprecated"
diff --git a/server/src/main/java/org/elasticsearch/common/xcontent/ChunkedToXContent.java b/server/src/main/java/org/elasticsearch/common/xcontent/ChunkedToXContent.java
index db0b5b4357c7d..1970983654b88 100644
--- a/server/src/main/java/org/elasticsearch/common/xcontent/ChunkedToXContent.java
+++ b/server/src/main/java/org/elasticsearch/common/xcontent/ChunkedToXContent.java
@@ -49,7 +49,6 @@ static ChunkedToXContentBuilder builder(ToXContent.Params params) {
      */
     default Iterator<? extends ToXContent> toXContentChunked(RestApiVersion restApiVersion, ToXContent.Params params) {
         return switch (restApiVersion) {
-            case V_7 -> throw new AssertionError("v7 API not supported");
             case V_8 -> toXContentChunkedV8(params);
             case V_9 -> toXContentChunked(params);
         };
diff --git a/server/src/main/java/org/elasticsearch/ingest/IngestDocument.java b/server/src/main/java/org/elasticsearch/ingest/IngestDocument.java
index 280c7684a8553..0614e9e92edf2 100644
--- a/server/src/main/java/org/elasticsearch/ingest/IngestDocument.java
+++ b/server/src/main/java/org/elasticsearch/ingest/IngestDocument.java
@@ -13,6 +13,7 @@
 import org.elasticsearch.common.util.CollectionUtils;
 import org.elasticsearch.common.util.Maps;
 import org.elasticsearch.common.util.set.Sets;
+import org.elasticsearch.core.UpdateForV10;
 import org.elasticsearch.index.VersionType;
 import org.elasticsearch.index.mapper.IdFieldMapper;
 import org.elasticsearch.index.mapper.IndexFieldMapper;
@@ -957,6 +958,8 @@ void resetTerminate() {
         terminate = false;
     }
 
+    // Unconditionally deprecate the _type field once V7 BWC support is removed
+    @UpdateForV10(owner = UpdateForV10.Owner.DATA_MANAGEMENT)
     public enum Metadata {
         INDEX(IndexFieldMapper.NAME),
         TYPE("_type"),
diff --git a/server/src/test/java/org/elasticsearch/action/bulk/BulkRequestParserTests.java b/server/src/test/java/org/elasticsearch/action/bulk/BulkRequestParserTests.java
index 5785d076693e7..9d944d43f4c36 100644
--- a/server/src/test/java/org/elasticsearch/action/bulk/BulkRequestParserTests.java
+++ b/server/src/test/java/org/elasticsearch/action/bulk/BulkRequestParserTests.java
@@ -30,7 +30,7 @@ public class BulkRequestParserTests extends ESTestCase {
 
     @UpdateForV10(owner = UpdateForV10.Owner.DATA_MANAGEMENT) // Replace with just RestApiVersion.values() when V8 no longer exists
     public static final List<RestApiVersion> REST_API_VERSIONS_POST_V8 = Stream.of(RestApiVersion.values())
-        .filter(v -> v.compareTo(RestApiVersion.V_8) > 0)
+        .filter(v -> v.matches(RestApiVersion.onOrAfter(RestApiVersion.V_9)))
         .toList();
 
     public void testParserCannotBeReusedAfterFailure() {
diff --git a/server/src/test/java/org/elasticsearch/action/ingest/SimulatePipelineRequestParsingTests.java b/server/src/test/java/org/elasticsearch/action/ingest/SimulatePipelineRequestParsingTests.java
index b8be05fbfb72d..391c258b6f098 100644
--- a/server/src/test/java/org/elasticsearch/action/ingest/SimulatePipelineRequestParsingTests.java
+++ b/server/src/test/java/org/elasticsearch/action/ingest/SimulatePipelineRequestParsingTests.java
@@ -342,7 +342,7 @@ public void testIngestPipelineWithDocumentsWithType() throws Exception {
             requestContent,
             false,
             ingestService,
-            RestApiVersion.V_7
+            RestApiVersion.V_8
         );
         assertThat(actualRequest.verbose(), equalTo(false));
         assertThat(actualRequest.documents().size(), equalTo(numDocs));
diff --git a/x-pack/plugin/core/src/main/java/org/elasticsearch/license/License.java b/x-pack/plugin/core/src/main/java/org/elasticsearch/license/License.java
index f280dcf9b3edf..19790e61b6102 100644
--- a/x-pack/plugin/core/src/main/java/org/elasticsearch/license/License.java
+++ b/x-pack/plugin/core/src/main/java/org/elasticsearch/license/License.java
@@ -15,7 +15,6 @@
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.xcontent.LoggingDeprecationHandler;
 import org.elasticsearch.common.xcontent.XContentHelper;
-import org.elasticsearch.core.RestApiVersion;
 import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.features.NodeFeature;
 import org.elasticsearch.xcontent.ToXContentObject;
@@ -142,7 +141,7 @@ static boolean isEnterprise(String typeName) {
      */
     public static final String LICENSE_VERSION_MODE = "license_version";
     /**
-     * Set for {@link RestApiVersion#V_7} requests only
+     * Set for RestApiVersion#V_7 requests only
      * XContent param name to map the "enterprise" license type to "platinum"
      * for backwards compatibility with older clients
      */
diff --git a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/MachineLearningField.java b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/MachineLearningField.java
index 6c49cadb8d189..3a37f94e6b2d4 100644
--- a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/MachineLearningField.java
+++ b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/MachineLearningField.java
@@ -22,9 +22,6 @@
 
 public final class MachineLearningField {
 
-    public static final String DEPRECATED_ALLOW_NO_JOBS_PARAM = "allow_no_jobs";
-    public static final String DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM = "allow_no_datafeeds";
-
     public static final Setting<Boolean> AUTODETECT_PROCESS = Setting.boolSetting(
         "xpack.ml.autodetect_process",
         true,
diff --git a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/CloseJobAction.java b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/CloseJobAction.java
index bddae0417e467..5963cff9746b6 100644
--- a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/CloseJobAction.java
+++ b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/CloseJobAction.java
@@ -12,9 +12,7 @@
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
-import org.elasticsearch.core.RestApiVersion;
 import org.elasticsearch.core.TimeValue;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.tasks.Task;
 import org.elasticsearch.xcontent.ObjectParser;
 import org.elasticsearch.xcontent.ParseField;
@@ -27,10 +25,6 @@
 import java.io.IOException;
 import java.util.Objects;
 
-import static org.elasticsearch.core.RestApiVersion.equalTo;
-import static org.elasticsearch.core.RestApiVersion.onOrAfter;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_JOBS_PARAM;
-
 public class CloseJobAction extends ActionType<CloseJobAction.Response> {
 
     public static final CloseJobAction INSTANCE = new CloseJobAction();
@@ -45,11 +39,7 @@ public static class Request extends BaseTasksRequest<Request> implements ToXCont
         public static final ParseField TIMEOUT = new ParseField("timeout");
         public static final ParseField FORCE = new ParseField("force");
 
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate forRestApiVersion
-        public static final ParseField ALLOW_NO_MATCH = new ParseField("allow_no_match").forRestApiVersion(onOrAfter(RestApiVersion.V_8));
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
-        public static final ParseField ALLOW_NO_MATCH_V7 = new ParseField("allow_no_match", DEPRECATED_ALLOW_NO_JOBS_PARAM)
-            .forRestApiVersion(equalTo(RestApiVersion.V_7));
+        public static final ParseField ALLOW_NO_MATCH = new ParseField("allow_no_match");
         public static final ObjectParser<Request, Void> PARSER = new ObjectParser<>(NAME, Request::new);
 
         static {
@@ -60,7 +50,6 @@ public static class Request extends BaseTasksRequest<Request> implements ToXCont
             );
             PARSER.declareBoolean(Request::setForce, FORCE);
             PARSER.declareBoolean(Request::setAllowNoMatch, ALLOW_NO_MATCH);
-            PARSER.declareBoolean(Request::setAllowNoMatch, ALLOW_NO_MATCH_V7);
         }
 
         public static Request parseRequest(String jobId, XContentParser parser) {
diff --git a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/GetDatafeedsStatsAction.java b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/GetDatafeedsStatsAction.java
index fafb9afa99f85..eabd6ef5939e3 100644
--- a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/GetDatafeedsStatsAction.java
+++ b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/GetDatafeedsStatsAction.java
@@ -15,6 +15,7 @@
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
 import org.elasticsearch.core.Nullable;
+import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.persistent.PersistentTasksCustomMetadata;
 import org.elasticsearch.tasks.CancellableTask;
 import org.elasticsearch.tasks.Task;
@@ -62,6 +63,7 @@ private GetDatafeedsStatsAction() {
     // serialized to older nodes where the transport action was a MasterNodeReadAction.
     // TODO: Make this a simple request in a future version where there is no possibility
     // of this request being serialized to another node.
+    @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING)
     public static class Request extends MasterNodeReadRequest<Request> {
 
         public static final String ALLOW_NO_MATCH = "allow_no_match";
diff --git a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/GetOverallBucketsAction.java b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/GetOverallBucketsAction.java
index 47bc6df5f6536..f9e91194fe31b 100644
--- a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/GetOverallBucketsAction.java
+++ b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/GetOverallBucketsAction.java
@@ -13,9 +13,7 @@
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.time.DateMathParser;
-import org.elasticsearch.core.RestApiVersion;
 import org.elasticsearch.core.TimeValue;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.index.mapper.DateFieldMapper;
 import org.elasticsearch.xcontent.ObjectParser;
 import org.elasticsearch.xcontent.ParseField;
@@ -33,10 +31,6 @@
 import java.util.Objects;
 import java.util.function.LongSupplier;
 
-import static org.elasticsearch.core.RestApiVersion.equalTo;
-import static org.elasticsearch.core.RestApiVersion.onOrAfter;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_JOBS_PARAM;
-
 /**
  * <p>
  * This action returns summarized bucket results over multiple jobs.
@@ -68,11 +62,7 @@ public static class Request extends ActionRequest implements ToXContentObject {
         public static final ParseField EXCLUDE_INTERIM = new ParseField("exclude_interim");
         public static final ParseField START = new ParseField("start");
         public static final ParseField END = new ParseField("end");
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate forRestApiVersion
-        public static final ParseField ALLOW_NO_MATCH = new ParseField("allow_no_match").forRestApiVersion(onOrAfter(RestApiVersion.V_8));
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
-        public static final ParseField ALLOW_NO_MATCH_V7 = new ParseField("allow_no_match", DEPRECATED_ALLOW_NO_JOBS_PARAM)
-            .forRestApiVersion(equalTo(RestApiVersion.V_7));
+        public static final ParseField ALLOW_NO_MATCH = new ParseField("allow_no_match");
 
         private static final ObjectParser<Request, Void> PARSER = new ObjectParser<>(NAME, Request::new);
 
@@ -88,7 +78,6 @@ public static class Request extends ActionRequest implements ToXContentObject {
             );
             PARSER.declareString((request, endTime) -> request.setEnd(parseDateOrThrow(endTime, END, System::currentTimeMillis)), END);
             PARSER.declareBoolean(Request::setAllowNoMatch, ALLOW_NO_MATCH);
-            PARSER.declareBoolean(Request::setAllowNoMatch, ALLOW_NO_MATCH_V7);
         }
 
         static long parseDateOrThrow(String date, ParseField paramName, LongSupplier now) {
diff --git a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/StopDatafeedAction.java b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/StopDatafeedAction.java
index bd4aac7ccad89..1278d1a57ec55 100644
--- a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/StopDatafeedAction.java
+++ b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/action/StopDatafeedAction.java
@@ -13,9 +13,7 @@
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
-import org.elasticsearch.core.RestApiVersion;
 import org.elasticsearch.core.TimeValue;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.tasks.Task;
 import org.elasticsearch.xcontent.ObjectParser;
 import org.elasticsearch.xcontent.ParseField;
@@ -29,10 +27,6 @@
 import java.io.IOException;
 import java.util.Objects;
 
-import static org.elasticsearch.core.RestApiVersion.equalTo;
-import static org.elasticsearch.core.RestApiVersion.onOrAfter;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM;
-
 public class StopDatafeedAction extends ActionType<StopDatafeedAction.Response> {
 
     public static final StopDatafeedAction INSTANCE = new StopDatafeedAction();
@@ -47,11 +41,7 @@ public static class Request extends BaseTasksRequest<Request> implements ToXCont
 
         public static final ParseField TIMEOUT = new ParseField("timeout");
         public static final ParseField FORCE = new ParseField("force");
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate forRestApiVersion
-        public static final ParseField ALLOW_NO_MATCH = new ParseField("allow_no_match").forRestApiVersion(onOrAfter(RestApiVersion.V_8));
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
-        public static final ParseField ALLOW_NO_MATCH_V7 = new ParseField("allow_no_match", DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM)
-            .forRestApiVersion(equalTo(RestApiVersion.V_7));
+        public static final ParseField ALLOW_NO_MATCH = new ParseField("allow_no_match");
 
         public static final ObjectParser<Request, Void> PARSER = new ObjectParser<>(NAME, Request::new);
         static {
@@ -62,7 +52,6 @@ public static class Request extends BaseTasksRequest<Request> implements ToXCont
             );
             PARSER.declareBoolean(Request::setForce, FORCE);
             PARSER.declareBoolean(Request::setAllowNoMatch, ALLOW_NO_MATCH);
-            PARSER.declareBoolean(Request::setAllowNoMatch, ALLOW_NO_MATCH_V7);
         }
 
         public static Request parseRequest(String datafeedId, XContentParser parser) {
diff --git a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/cat/RestCatDatafeedsAction.java b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/cat/RestCatDatafeedsAction.java
index 205bb4f68a62c..417e9bca0a497 100644
--- a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/cat/RestCatDatafeedsAction.java
+++ b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/cat/RestCatDatafeedsAction.java
@@ -10,9 +10,7 @@
 import org.elasticsearch.cluster.node.DiscoveryNode;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.Table;
-import org.elasticsearch.core.RestApiVersion;
 import org.elasticsearch.core.TimeValue;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.RestResponse;
 import org.elasticsearch.rest.Scope;
@@ -30,8 +28,6 @@
 import java.util.List;
 
 import static org.elasticsearch.rest.RestRequest.Method.GET;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM;
-import static org.elasticsearch.xpack.ml.rest.RestCompatibilityChecker.checkAndSetDeprecatedParam;
 
 @ServerlessScope(Scope.PUBLIC)
 public class RestCatDatafeedsAction extends AbstractCatAction {
@@ -52,16 +48,8 @@ protected RestChannelConsumer doCatRequest(RestRequest restRequest, NodeClient c
         if (Strings.isNullOrEmpty(datafeedId)) {
             datafeedId = GetDatafeedsStatsAction.ALL;
         }
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
         Request request = new Request(datafeedId);
-        checkAndSetDeprecatedParam(
-            DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM,
-            Request.ALLOW_NO_MATCH,
-            RestApiVersion.V_7,
-            restRequest,
-            (r, s) -> r.paramAsBoolean(s, request.allowNoMatch()),
-            request::setAllowNoMatch
-        );
+        request.setAllowNoMatch(restRequest.paramAsBoolean(Request.ALLOW_NO_MATCH, request.allowNoMatch()));
         return channel -> client.execute(GetDatafeedsStatsAction.INSTANCE, request, new RestResponseListener<>(channel) {
             @Override
             public RestResponse buildResponse(Response getDatafeedsStatsRespons) throws Exception {
diff --git a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/cat/RestCatJobsAction.java b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/cat/RestCatJobsAction.java
index b27819bceee44..d8088c9510b6a 100644
--- a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/cat/RestCatJobsAction.java
+++ b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/cat/RestCatJobsAction.java
@@ -12,9 +12,7 @@
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.Table;
 import org.elasticsearch.common.unit.ByteSizeValue;
-import org.elasticsearch.core.RestApiVersion;
 import org.elasticsearch.core.TimeValue;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.RestResponse;
 import org.elasticsearch.rest.Scope;
@@ -35,8 +33,6 @@
 import java.util.List;
 
 import static org.elasticsearch.rest.RestRequest.Method.GET;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_JOBS_PARAM;
-import static org.elasticsearch.xpack.ml.rest.RestCompatibilityChecker.checkAndSetDeprecatedParam;
 
 @ServerlessScope(Scope.PUBLIC)
 public class RestCatJobsAction extends AbstractCatAction {
@@ -57,16 +53,8 @@ protected RestChannelConsumer doCatRequest(RestRequest restRequest, NodeClient c
         if (Strings.isNullOrEmpty(jobId)) {
             jobId = Metadata.ALL;
         }
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
         Request request = new Request(jobId);
-        checkAndSetDeprecatedParam(
-            DEPRECATED_ALLOW_NO_JOBS_PARAM,
-            Request.ALLOW_NO_MATCH,
-            RestApiVersion.V_7,
-            restRequest,
-            (r, s) -> r.paramAsBoolean(s, request.allowNoMatch()),
-            request::setAllowNoMatch
-        );
+        request.setAllowNoMatch(restRequest.paramAsBoolean(Request.ALLOW_NO_MATCH, request.allowNoMatch()));
         return channel -> client.execute(GetJobsStatsAction.INSTANCE, request, new RestResponseListener<>(channel) {
             @Override
             public RestResponse buildResponse(Response getJobStatsResponse) throws Exception {
diff --git a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestGetDatafeedStatsAction.java b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestGetDatafeedStatsAction.java
index 8c85c055fca3b..a4879eca46d39 100644
--- a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestGetDatafeedStatsAction.java
+++ b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestGetDatafeedStatsAction.java
@@ -8,8 +8,6 @@
 
 import org.elasticsearch.client.internal.node.NodeClient;
 import org.elasticsearch.common.Strings;
-import org.elasticsearch.core.RestApiVersion;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.Scope;
@@ -24,10 +22,8 @@
 import java.util.List;
 
 import static org.elasticsearch.rest.RestRequest.Method.GET;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM;
 import static org.elasticsearch.xpack.core.ml.datafeed.DatafeedConfig.ID;
 import static org.elasticsearch.xpack.ml.MachineLearning.BASE_PATH;
-import static org.elasticsearch.xpack.ml.rest.RestCompatibilityChecker.checkAndSetDeprecatedParam;
 
 @ServerlessScope(Scope.PUBLIC)
 public class RestGetDatafeedStatsAction extends BaseRestHandler {
@@ -48,16 +44,8 @@ protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient
         if (Strings.isNullOrEmpty(datafeedId)) {
             datafeedId = GetDatafeedsStatsAction.ALL;
         }
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
         Request request = new Request(datafeedId);
-        checkAndSetDeprecatedParam(
-            DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM,
-            Request.ALLOW_NO_MATCH,
-            RestApiVersion.V_7,
-            restRequest,
-            (r, s) -> r.paramAsBoolean(s, request.allowNoMatch()),
-            request::setAllowNoMatch
-        );
+        request.setAllowNoMatch(restRequest.paramAsBoolean(Request.ALLOW_NO_MATCH, request.allowNoMatch()));
         return channel -> new RestCancellableNodeClient(client, restRequest.getHttpChannel()).execute(
             GetDatafeedsStatsAction.INSTANCE,
             request,
diff --git a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestGetDatafeedsAction.java b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestGetDatafeedsAction.java
index fd0681f68a3a5..6955b81fdbb4c 100644
--- a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestGetDatafeedsAction.java
+++ b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestGetDatafeedsAction.java
@@ -7,8 +7,6 @@
 package org.elasticsearch.xpack.ml.rest.datafeeds;
 
 import org.elasticsearch.client.internal.node.NodeClient;
-import org.elasticsearch.core.RestApiVersion;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.Scope;
@@ -26,11 +24,9 @@
 import java.util.Set;
 
 import static org.elasticsearch.rest.RestRequest.Method.GET;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM;
 import static org.elasticsearch.xpack.core.ml.datafeed.DatafeedConfig.ID;
 import static org.elasticsearch.xpack.core.ml.utils.ToXContentParams.EXCLUDE_GENERATED;
 import static org.elasticsearch.xpack.ml.MachineLearning.BASE_PATH;
-import static org.elasticsearch.xpack.ml.rest.RestCompatibilityChecker.checkAndSetDeprecatedParam;
 
 @ServerlessScope(Scope.PUBLIC)
 public class RestGetDatafeedsAction extends BaseRestHandler {
@@ -51,16 +47,8 @@ protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient
         if (datafeedId == null) {
             datafeedId = GetDatafeedsAction.ALL;
         }
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
         Request request = new Request(datafeedId);
-        checkAndSetDeprecatedParam(
-            DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM,
-            GetDatafeedsStatsAction.Request.ALLOW_NO_MATCH,
-            RestApiVersion.V_7,
-            restRequest,
-            (r, s) -> r.paramAsBoolean(s, request.allowNoMatch()),
-            request::setAllowNoMatch
-        );
+        request.setAllowNoMatch(restRequest.paramAsBoolean(GetDatafeedsStatsAction.Request.ALLOW_NO_MATCH, request.allowNoMatch()));
         return channel -> new RestCancellableNodeClient(client, restRequest.getHttpChannel()).execute(
             GetDatafeedsAction.INSTANCE,
             request,
diff --git a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestStopDatafeedAction.java b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestStopDatafeedAction.java
index 8235e2785cc37..dcc213a571469 100644
--- a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestStopDatafeedAction.java
+++ b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/datafeeds/RestStopDatafeedAction.java
@@ -7,9 +7,7 @@
 package org.elasticsearch.xpack.ml.rest.datafeeds;
 
 import org.elasticsearch.client.internal.node.NodeClient;
-import org.elasticsearch.core.RestApiVersion;
 import org.elasticsearch.core.TimeValue;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.RestResponse;
@@ -28,10 +26,8 @@
 import java.util.List;
 
 import static org.elasticsearch.rest.RestRequest.Method.POST;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM;
 import static org.elasticsearch.xpack.core.ml.datafeed.DatafeedConfig.ID;
 import static org.elasticsearch.xpack.ml.MachineLearning.BASE_PATH;
-import static org.elasticsearch.xpack.ml.rest.RestCompatibilityChecker.checkAndSetDeprecatedParam;
 
 @ServerlessScope(Scope.PUBLIC)
 public class RestStopDatafeedAction extends BaseRestHandler {
@@ -49,7 +45,6 @@ public String getName() {
     @Override
     protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient client) throws IOException {
         String datafeedId = restRequest.param(DatafeedConfig.ID.getPreferredName());
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
         Request request;
         if (restRequest.hasContentOrSourceParam()) {
             XContentParser parser = restRequest.contentOrSourceParamParser();
@@ -63,14 +58,7 @@ protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient
             if (restRequest.hasParam(Request.FORCE.getPreferredName())) {
                 request.setForce(restRequest.paramAsBoolean(Request.FORCE.getPreferredName(), request.isForce()));
             }
-            checkAndSetDeprecatedParam(
-                DEPRECATED_ALLOW_NO_DATAFEEDS_PARAM,
-                Request.ALLOW_NO_MATCH.getPreferredName(),
-                RestApiVersion.V_7,
-                restRequest,
-                (r, s) -> r.paramAsBoolean(s, request.allowNoMatch()),
-                request::setAllowNoMatch
-            );
+            request.setAllowNoMatch(restRequest.paramAsBoolean(Request.ALLOW_NO_MATCH.getPreferredName(), request.allowNoMatch()));
         }
         return channel -> client.execute(StopDatafeedAction.INSTANCE, request, new RestBuilderListener<Response>(channel) {
 
diff --git a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestCloseJobAction.java b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestCloseJobAction.java
index f98a2f5a933ae..56afb7d65dfe3 100644
--- a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestCloseJobAction.java
+++ b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestCloseJobAction.java
@@ -7,9 +7,7 @@
 package org.elasticsearch.xpack.ml.rest.job;
 
 import org.elasticsearch.client.internal.node.NodeClient;
-import org.elasticsearch.core.RestApiVersion;
 import org.elasticsearch.core.TimeValue;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.Scope;
@@ -23,10 +21,8 @@
 import java.util.List;
 
 import static org.elasticsearch.rest.RestRequest.Method.POST;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_JOBS_PARAM;
 import static org.elasticsearch.xpack.core.ml.job.config.Job.ID;
 import static org.elasticsearch.xpack.ml.MachineLearning.BASE_PATH;
-import static org.elasticsearch.xpack.ml.rest.RestCompatibilityChecker.checkAndSetDeprecatedParam;
 
 @ServerlessScope(Scope.PUBLIC)
 public class RestCloseJobAction extends BaseRestHandler {
@@ -43,7 +39,6 @@ public String getName() {
 
     @Override
     protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient client) throws IOException {
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
         Request request;
         if (restRequest.hasContentOrSourceParam()) {
             request = Request.parseRequest(restRequest.param(Job.ID.getPreferredName()), restRequest.contentParser());
@@ -57,14 +52,7 @@ protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient
             if (restRequest.hasParam(Request.FORCE.getPreferredName())) {
                 request.setForce(restRequest.paramAsBoolean(Request.FORCE.getPreferredName(), request.isForce()));
             }
-            checkAndSetDeprecatedParam(
-                DEPRECATED_ALLOW_NO_JOBS_PARAM,
-                Request.ALLOW_NO_MATCH.getPreferredName(),
-                RestApiVersion.V_7,
-                restRequest,
-                (r, s) -> r.paramAsBoolean(s, request.allowNoMatch()),
-                request::setAllowNoMatch
-            );
+            request.setAllowNoMatch(restRequest.paramAsBoolean(Request.ALLOW_NO_MATCH.getPreferredName(), request.allowNoMatch()));
         }
         return channel -> client.execute(CloseJobAction.INSTANCE, request, new RestToXContentListener<>(channel));
     }
diff --git a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestGetJobStatsAction.java b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestGetJobStatsAction.java
index 2899faabdc40f..79951d7fad621 100644
--- a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestGetJobStatsAction.java
+++ b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestGetJobStatsAction.java
@@ -9,8 +9,6 @@
 import org.elasticsearch.client.internal.node.NodeClient;
 import org.elasticsearch.cluster.metadata.Metadata;
 import org.elasticsearch.common.Strings;
-import org.elasticsearch.core.RestApiVersion;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.Scope;
@@ -25,10 +23,8 @@
 import java.util.List;
 
 import static org.elasticsearch.rest.RestRequest.Method.GET;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_JOBS_PARAM;
 import static org.elasticsearch.xpack.core.ml.job.config.Job.ID;
 import static org.elasticsearch.xpack.ml.MachineLearning.BASE_PATH;
-import static org.elasticsearch.xpack.ml.rest.RestCompatibilityChecker.checkAndSetDeprecatedParam;
 
 @ServerlessScope(Scope.PUBLIC)
 public class RestGetJobStatsAction extends BaseRestHandler {
@@ -52,16 +48,8 @@ protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient
         if (Strings.isNullOrEmpty(jobId)) {
             jobId = Metadata.ALL;
         }
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
         Request request = new Request(jobId);
-        checkAndSetDeprecatedParam(
-            DEPRECATED_ALLOW_NO_JOBS_PARAM,
-            Request.ALLOW_NO_MATCH,
-            RestApiVersion.V_7,
-            restRequest,
-            (r, s) -> r.paramAsBoolean(s, request.allowNoMatch()),
-            request::setAllowNoMatch
-        );
+        request.setAllowNoMatch(restRequest.paramAsBoolean(Request.ALLOW_NO_MATCH, request.allowNoMatch()));
         return channel -> new RestCancellableNodeClient(client, restRequest.getHttpChannel()).execute(
             GetJobsStatsAction.INSTANCE,
             request,
diff --git a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestGetJobsAction.java b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestGetJobsAction.java
index ae8d234d1d8bd..ea63a38ab01a8 100644
--- a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestGetJobsAction.java
+++ b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestGetJobsAction.java
@@ -9,8 +9,6 @@
 import org.elasticsearch.client.internal.node.NodeClient;
 import org.elasticsearch.cluster.metadata.Metadata;
 import org.elasticsearch.common.Strings;
-import org.elasticsearch.core.RestApiVersion;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.Scope;
@@ -27,11 +25,9 @@
 import java.util.Set;
 
 import static org.elasticsearch.rest.RestRequest.Method.GET;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_JOBS_PARAM;
 import static org.elasticsearch.xpack.core.ml.job.config.Job.ID;
 import static org.elasticsearch.xpack.core.ml.utils.ToXContentParams.EXCLUDE_GENERATED;
 import static org.elasticsearch.xpack.ml.MachineLearning.BASE_PATH;
-import static org.elasticsearch.xpack.ml.rest.RestCompatibilityChecker.checkAndSetDeprecatedParam;
 
 @ServerlessScope(Scope.PUBLIC)
 public class RestGetJobsAction extends BaseRestHandler {
@@ -52,16 +48,8 @@ protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient
         if (Strings.isNullOrEmpty(jobId)) {
             jobId = Metadata.ALL;
         }
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
         Request request = new Request(jobId);
-        checkAndSetDeprecatedParam(
-            DEPRECATED_ALLOW_NO_JOBS_PARAM,
-            Request.ALLOW_NO_MATCH,
-            RestApiVersion.V_7,
-            restRequest,
-            (r, s) -> r.paramAsBoolean(s, request.allowNoMatch()),
-            request::setAllowNoMatch
-        );
+        request.setAllowNoMatch(restRequest.paramAsBoolean(Request.ALLOW_NO_MATCH, request.allowNoMatch()));
         return channel -> new RestCancellableNodeClient(client, restRequest.getHttpChannel()).execute(
             GetJobsAction.INSTANCE,
             request,
diff --git a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/results/RestGetOverallBucketsAction.java b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/results/RestGetOverallBucketsAction.java
index 2700e01cb9f6b..c74f49efe0aed 100644
--- a/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/results/RestGetOverallBucketsAction.java
+++ b/x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/results/RestGetOverallBucketsAction.java
@@ -7,8 +7,6 @@
 package org.elasticsearch.xpack.ml.rest.results;
 
 import org.elasticsearch.client.internal.node.NodeClient;
-import org.elasticsearch.core.RestApiVersion;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.Scope;
@@ -24,10 +22,8 @@
 
 import static org.elasticsearch.rest.RestRequest.Method.GET;
 import static org.elasticsearch.rest.RestRequest.Method.POST;
-import static org.elasticsearch.xpack.core.ml.MachineLearningField.DEPRECATED_ALLOW_NO_JOBS_PARAM;
 import static org.elasticsearch.xpack.core.ml.job.config.Job.ID;
 import static org.elasticsearch.xpack.ml.MachineLearning.BASE_PATH;
-import static org.elasticsearch.xpack.ml.rest.RestCompatibilityChecker.checkAndSetDeprecatedParam;
 
 @ServerlessScope(Scope.PUBLIC)
 public class RestGetOverallBucketsAction extends BaseRestHandler {
@@ -48,7 +44,6 @@ public String getName() {
     @Override
     protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient client) throws IOException {
         String jobId = restRequest.param(Job.ID.getPreferredName());
-        @UpdateForV9(owner = UpdateForV9.Owner.MACHINE_LEARNING) // v7 REST API no longer exists: eliminate ref to RestApiVersion.V_7
         final Request request;
         if (restRequest.hasContentOrSourceParam()) {
             XContentParser parser = restRequest.contentOrSourceParamParser();
@@ -67,14 +62,7 @@ protected RestChannelConsumer prepareRequest(RestRequest restRequest, NodeClient
             if (restRequest.hasParam(Request.END.getPreferredName())) {
                 request.setEnd(restRequest.param(Request.END.getPreferredName()));
             }
-            checkAndSetDeprecatedParam(
-                DEPRECATED_ALLOW_NO_JOBS_PARAM,
-                Request.ALLOW_NO_MATCH.getPreferredName(),
-                RestApiVersion.V_7,
-                restRequest,
-                (r, s) -> r.paramAsBoolean(s, request.allowNoMatch()),
-                request::setAllowNoMatch
-            );
+            request.setAllowNoMatch(restRequest.paramAsBoolean(Request.ALLOW_NO_MATCH.getPreferredName(), request.allowNoMatch()));
         }
 
         return channel -> client.execute(GetOverallBucketsAction.INSTANCE, request, new RestToXContentListener<>(channel));