diff --git a/CHANGELOG.md b/CHANGELOG.md
index d520d3f8c..b04e63afb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -49,6 +49,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Added `is_hidden` to `/{index}/_alias/{name}` and `/{index}/_aliases/{name}` ([#429](https://github.com/opensearch-project/opensearch-api-specification/pull/429))
 - Added `ignore_unmapped` to `GeoDistanceQuery` ([#427](https://github.com/opensearch-project/opensearch-api-specification/pull/427))
 - Added missing variants of `indices.put_alias` ([#434](https://github.com/opensearch-project/opensearch-api-specification/pull/434)) 
+- Added missing search response processors and new `sort` and `split` processors ([#440](https://github.com/opensearch-project/opensearch-api-specification/pull/440)) 
 
 ### Changed
 
diff --git a/spec/schemas/search_pipeline._common.yaml b/spec/schemas/search_pipeline._common.yaml
index 01c96e4e4..ebb14ee9a 100644
--- a/spec/schemas/search_pipeline._common.yaml
+++ b/spec/schemas/search_pipeline._common.yaml
@@ -195,56 +195,56 @@ components:
             personalize_search_ranking:
               $ref: '#/components/schemas/PersonalizeSearchRankingResponseProcessor'
           required:
-          - personalize_search_ranking
+            - personalize_search_ranking
         - type: object
           title: retrieval_augmented_generation
           properties:
             retrieval_augmented_generation:
               $ref: '#/components/schemas/RetrievalAugmentedGenerationResponseProcessor'
           required:
-          - retrieval_augmented_generation
+            - retrieval_augmented_generation
         - type: object
           title: rename_field
           properties:
             rename_field:
               $ref: '#/components/schemas/RenameFieldResponseProcessor'
           required:
-          - rename_field
+            - rename_field
         - type: object
           title: rerank
           properties:
             rerank:
               $ref: '#/components/schemas/RerankResponseProcessor'
           required:
-          - rerank
+            - rerank
         - type: object
           title: collapse
           properties:
             collapse:
               $ref: '#/components/schemas/CollapseResponseProcessor'
           required:
-          - collapse
+            - collapse
         - type: object
           title: truncate_hits
           properties:
             truncate_hits:
               $ref: '#/components/schemas/TruncateHitsResponseProcessor'
           required:
-          - truncate_hits
+            - truncate_hits
         - type: object
           title: sort
           properties:
             sort:
               $ref: '#/components/schemas/SortResponseProcessor'
           required:
-          - truncate_hits
+            - sort
         - type: object
           title: split
           properties:
             split:
               $ref: '#/components/schemas/SplitResponseProcessor'
           required:
-          - truncate_hits
+            - split
     PersonalizeSearchRankingResponseProcessor:
       type: object
       properties:
@@ -266,9 +266,9 @@ components:
         iam_role_arn:
           type: string
       required:
-      - campaign_arn
-      - recipe
-      - weight
+        - campaign_arn
+        - recipe
+        - weight
     RetrievalAugmentedGenerationResponseProcessor:
       type: object
       properties:
@@ -287,8 +287,8 @@ components:
         user_instructions:
           type: string
       required:
-      - context_field_list
-      - model_id
+        - context_field_list
+        - model_id
     RenameFieldResponseProcessor:
       type: object
       properties:
@@ -303,8 +303,8 @@ components:
         target_field:
           type: string
       required:
-      - field
-      - target_field
+        - field
+        - target_field
     RerankContext:
       type: object
       properties:
@@ -313,14 +313,14 @@ components:
           items:
             type: string
       required:
-      - document_fields
+        - document_fields
     MLOpenSearchReranker:
       type: object
       properties:
         model_id:
           type: string
       required:
-      - model_id
+        - model_id
     RerankResponseProcessor:
       type: object
       properties:
@@ -348,7 +348,7 @@ components:
         context_prefix:
           type: string
       required:
-      - field
+        - field
     TruncateHitsResponseProcessor:
       type: object
       properties:
@@ -379,7 +379,7 @@ components:
         target_field:
           type: string
       required:
-      - field
+        - field
     SplitResponseProcessor:
       type: object
       properties:
@@ -398,8 +398,8 @@ components:
         target_field:
           type: string
       required:
-      - field
-      - separator
+        - field
+        - separator
     PhaseResultsProcessor:
       oneOf:
         - type: object
diff --git a/tests/_core/search/pipeline.yaml b/tests/_core/search/pipeline.yaml
index 4172d0e68..f394cd889 100644
--- a/tests/_core/search/pipeline.yaml
+++ b/tests/_core/search/pipeline.yaml
@@ -17,13 +17,13 @@ chapters:
       payload:
         response_processors:
           - sort:
-              field: 'message'
-              order: 'asc'
-              target_field: 'sorted_message'
+              field: message
+              order: asc
+              target_field: sorted_message
           - split:
-              field: 'message'
+              field: message
               separator: ', '
-              target_field: 'split_message'
+              target_field: split_message
     response:
       status: 200
       payload: