diff --git a/CHANGELOG.md b/CHANGELOG.md
index e232a1f..17d14ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,13 +4,12 @@ All notable changes to this project will be documented in this file.
 
 ## [0.0.1-RC8]
 
-- LeiaElasticBundle: Fixes the override for adding ElasticHealthCheck
-- Removed the unused `LeiaCompiledPath` class
 - SchemaDetails: 
   - Moved the nested `SchemaKey` attributes to the class level
   - made the getReferenceId() uniform with `SchemaKey` implementation 
 - FieldUtils: Excluding non-serializable fields(static, transient, @JsonIgnore) for building the schema attributes
 - SchemaResource: Bug fix in SchemaValidation resource
+- Removed the unused `LeiaCompiledPath` class
 
 ## [0.0.1-RC7]
 
diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
new file mode 100644
index 0000000..00334bf
--- /dev/null
+++ b/CONTRIBUTORS.md
@@ -0,0 +1,6 @@
+### Contributors
+
+* [Koushik R](https://github.com/koushikr)
+* [Abhishek](https://github.com/abhigun)
+* [Subham](https://github.com/nullsoni)
+
diff --git a/leia-models/src/main/java/com/grookage/leia/models/request/ValidateSchemaRequest.java b/leia-models/src/main/java/com/grookage/leia/models/request/ValidateSchemaRequest.java
index d31ac95..72c0a6a 100644
--- a/leia-models/src/main/java/com/grookage/leia/models/request/ValidateSchemaRequest.java
+++ b/leia-models/src/main/java/com/grookage/leia/models/request/ValidateSchemaRequest.java
@@ -8,6 +8,7 @@
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import javax.validation.Valid;
 import javax.validation.constraints.NotNull;
 
 @Data
@@ -16,6 +17,7 @@
 @NoArgsConstructor
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class ValidateSchemaRequest {
+    @Valid
     @NotNull
     private SchemaKey schemaKey;
     @NotNull
diff --git a/leia-models/src/main/java/com/grookage/leia/models/schema/SchemaDetails.java b/leia-models/src/main/java/com/grookage/leia/models/schema/SchemaDetails.java
index 47390f4..7306090 100644
--- a/leia-models/src/main/java/com/grookage/leia/models/schema/SchemaDetails.java
+++ b/leia-models/src/main/java/com/grookage/leia/models/schema/SchemaDetails.java
@@ -66,7 +66,7 @@ public boolean match(final SchemaKey thatKey) {
 
     @JsonIgnore
     public String getReferenceId() {
-        return Joiner.on(".").join(namespace, schemaName, version).toUpperCase(Locale.ROOT);
+        return Joiner.on(":").join(namespace, schemaName, version).toUpperCase(Locale.ROOT);
     }
 
     @JsonIgnore
diff --git a/leia-models/src/main/java/com/grookage/leia/models/schema/SchemaKey.java b/leia-models/src/main/java/com/grookage/leia/models/schema/SchemaKey.java
index 424cc42..ad76c57 100644
--- a/leia-models/src/main/java/com/grookage/leia/models/schema/SchemaKey.java
+++ b/leia-models/src/main/java/com/grookage/leia/models/schema/SchemaKey.java
@@ -24,6 +24,7 @@
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import javax.validation.constraints.NotBlank;
 import java.util.Locale;
 
 @Builder
@@ -32,13 +33,16 @@
 @NoArgsConstructor
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class SchemaKey {
+    @NotBlank
     private String namespace;
+    @NotBlank
     private String schemaName;
+    @NotBlank
     private String version;
 
     @JsonIgnore
     public String getReferenceId() {
-        return Joiner.on(".").join(namespace, schemaName, version).toUpperCase(Locale.ROOT);
+        return Joiner.on(":").join(namespace, schemaName, version).toUpperCase(Locale.ROOT);
     }
 
     @Override