diff --git a/components/apimgt/org.wso2.carbon.apimgt.rest.api.common/src/main/resources/publisher-api.yaml b/components/apimgt/org.wso2.carbon.apimgt.rest.api.common/src/main/resources/publisher-api.yaml
index ed8af8447320..6d09622aa58c 100644
--- a/components/apimgt/org.wso2.carbon.apimgt.rest.api.common/src/main/resources/publisher-api.yaml
+++ b/components/apimgt/org.wso2.carbon.apimgt.rest.api.common/src/main/resources/publisher-api.yaml
@@ -487,6 +487,83 @@ paths:
           -H "Content-Type: application/json" -d @data.json
           "https://127.0.0.1:9443/api/am/publisher/v4/apis/7a2298c4-c905-403f-8fac-38c73301631f/topics"'
 
+  /apis/{apiId}/custom-sequence:
+    put:
+      tags:
+        - APIs
+      summary: Upload Custom Sequence as the Endpoint of the API
+      description: This operation can be used to change the endpoint of the API to Custom Sequence
+      operationId: customSequenceUpdate
+      parameters:
+        - $ref: '#/components/parameters/apiId'
+        - $ref: '#/components/parameters/If-Match'
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              properties:
+                sequence:
+                  type: string
+                  description: The sequence that needs to be uploaded.
+                  format: binary
+                type:
+                  type: string
+                  description: Type of the Endpoint
+                apiData:
+                  type: string
+                  description: API Data to be updated
+      responses:
+        200:
+          description: |
+            OK.
+            Successful response with updated API object
+          headers:
+            ETag:
+              description: |
+                Entity Tag of the response resource. Used by caches, or in conditional requests (Will be supported in future).
+              schema:
+                type: string
+            Last-Modified:
+              description: |
+                Date and time the resource has been modifed the last time.
+                Used by caches, or in conditional requests (Will be supported in future).
+              schema:
+                type: string
+            Location:
+              description: |
+                The URL of the newly created resource.
+              schema:
+                type: string
+            Content-Type:
+              description: |
+                The content type of the body.
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/API'
+        400:
+          $ref: '#/components/responses/BadRequest'
+        403:
+          $ref: '#/components/responses/Forbidden'
+        404:
+          $ref: '#/components/responses/NotFound'
+        409:
+          $ref: '#/components/responses/Conflict'
+        412:
+          $ref: '#/components/responses/PreconditionFailed'
+      security:
+        - OAuth2Security:
+            - apim:api_create
+            - apim:api_manage
+            - apim:api_publish
+      x-code-samples:
+        - lang: Curl
+          source: 'curl -k -X PUT -H "Authorization: Bearer ae4eae22-3f65-387b-a171-d37eaa366fa8"
+          -H "Content-Type: application/json" -d @data.json "https://127.0.0.1:9443/api/am/publisher/v4/apis/7a2298c4-c905-403f-8fac-38c73301631f"'
+
+
   /apis/{apiId}/reimport-service:
     put:
       tags:
diff --git a/components/apimgt/org.wso2.carbon.apimgt.rest.api.publisher.v1/src/main/resources/publisher-api.yaml b/components/apimgt/org.wso2.carbon.apimgt.rest.api.publisher.v1/src/main/resources/publisher-api.yaml
index ed8af8447320..6d09622aa58c 100644
--- a/components/apimgt/org.wso2.carbon.apimgt.rest.api.publisher.v1/src/main/resources/publisher-api.yaml
+++ b/components/apimgt/org.wso2.carbon.apimgt.rest.api.publisher.v1/src/main/resources/publisher-api.yaml
@@ -487,6 +487,83 @@ paths:
           -H "Content-Type: application/json" -d @data.json
           "https://127.0.0.1:9443/api/am/publisher/v4/apis/7a2298c4-c905-403f-8fac-38c73301631f/topics"'
 
+  /apis/{apiId}/custom-sequence:
+    put:
+      tags:
+        - APIs
+      summary: Upload Custom Sequence as the Endpoint of the API
+      description: This operation can be used to change the endpoint of the API to Custom Sequence
+      operationId: customSequenceUpdate
+      parameters:
+        - $ref: '#/components/parameters/apiId'
+        - $ref: '#/components/parameters/If-Match'
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              properties:
+                sequence:
+                  type: string
+                  description: The sequence that needs to be uploaded.
+                  format: binary
+                type:
+                  type: string
+                  description: Type of the Endpoint
+                apiData:
+                  type: string
+                  description: API Data to be updated
+      responses:
+        200:
+          description: |
+            OK.
+            Successful response with updated API object
+          headers:
+            ETag:
+              description: |
+                Entity Tag of the response resource. Used by caches, or in conditional requests (Will be supported in future).
+              schema:
+                type: string
+            Last-Modified:
+              description: |
+                Date and time the resource has been modifed the last time.
+                Used by caches, or in conditional requests (Will be supported in future).
+              schema:
+                type: string
+            Location:
+              description: |
+                The URL of the newly created resource.
+              schema:
+                type: string
+            Content-Type:
+              description: |
+                The content type of the body.
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/API'
+        400:
+          $ref: '#/components/responses/BadRequest'
+        403:
+          $ref: '#/components/responses/Forbidden'
+        404:
+          $ref: '#/components/responses/NotFound'
+        409:
+          $ref: '#/components/responses/Conflict'
+        412:
+          $ref: '#/components/responses/PreconditionFailed'
+      security:
+        - OAuth2Security:
+            - apim:api_create
+            - apim:api_manage
+            - apim:api_publish
+      x-code-samples:
+        - lang: Curl
+          source: 'curl -k -X PUT -H "Authorization: Bearer ae4eae22-3f65-387b-a171-d37eaa366fa8"
+          -H "Content-Type: application/json" -d @data.json "https://127.0.0.1:9443/api/am/publisher/v4/apis/7a2298c4-c905-403f-8fac-38c73301631f"'
+
+
   /apis/{apiId}/reimport-service:
     put:
       tags: