diff --git a/CHANGELOG.md b/CHANGELOG.md
index 89f693614..d54f2f88f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -34,6 +34,8 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Added response schema for `GET /_plugins/_knn/warmup/{index}` ([#717](https://github.com/opensearch-project/opensearch-api-specification/pull/717))
 - Added support for multiple test verbs ([#724](https://github.com/opensearch-project/opensearch-api-specification/pull/724))
 - Added support for using a certificate and key in tests ([#731](https://github.com/opensearch-project/opensearch-api-specification/pull/731))
+- Added `_type` to `termvector` and `mtermvector` ([#734](https://github.com/opensearch-project/opensearch-api-specification/pull/734))
+- Added missing `cancelled` and `resource_stats` to `/_reindex/{task_id}/_rethrottle` ([#740](https://github.com/opensearch-project/opensearch-api-specification/pull/740))
 - Added `GET /_plugins/_ml/models/{model_id}`, `POST /_plugins/_ml/models/_search`, `PUT /_plugins/_ml/models/{model_id}`, `POST /_plugins/_ml/models/{model_id}/_unload`, `POST /_plugins/_ml/models/_unload`, `POST /_plugins/_ml/models/_undeploy`, `POST /_plugins/_ml/models/_upload`,`POST /_plugins/_ml/models/{model_id}/_load`, and `POST /_plugins/_ml/models/meta` ([#733](https://github.com/opensearch-project/opensearch-api-specification/pull/733))
 
 ### Removed
@@ -46,6 +48,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Removed unsupported `cause` and `create` from `/_index_template/_simulate_index/{name}` ([#691](https://github.com/opensearch-project/opensearch-api-specification/pull/691))
 - Removed `mappings` from `required` in `indices.simulate_template#Template` ([#691](https://github.com/opensearch-project/opensearch-api-specification/pull/691))
 - Removed `HealthStatusCapatilized` and merged it with `HealthStatus` ([#725](https://github.com/opensearch-project/opensearch-api-specification/pull/725))
+- Removed `id` from `required` in `indices.termvectors@200` ([#734](https://github.com/opensearch-project/opensearch-api-specification/pull/734))
 
 ### Fixed
 - Spec passes OpenAPI 3.1.0 validations ([#646](https://github.com/opensearch-project/opensearch-api-specification/pull/646))
@@ -74,6 +77,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Fixed request schema for `PATCH /_plugins/_security/api/nodesdn` ([#731](https://github.com/opensearch-project/opensearch-api-specification/pull/731))
 - Fixed response schema for `GET /_plugins/_security/api/nodesdn/{cluster_name}` ([#731](https://github.com/opensearch-project/opensearch-api-specification/pull/731))
 - Fixed request body for `/_search/scroll/{scroll_id}` ([#732](https://github.com/opensearch-project/opensearch-api-specification/pull/732))
+- Fixed type in `_msearch/template` ([#735](https://github.com/opensearch-project/opensearch-api-specification/pull/735))
 
 ### Changed
 - Changed `tasks._common:TaskInfo` and `tasks._common:TaskGroup` to be composed of a `tasks._common:TaskInfoBase` ([#683](https://github.com/opensearch-project/opensearch-api-specification/pull/683))
diff --git a/spec/namespaces/_core.yaml b/spec/namespaces/_core.yaml
index 229fc9e55..63a36d3d9 100644
--- a/spec/namespaces/_core.yaml
+++ b/spec/namespaces/_core.yaml
@@ -470,7 +470,7 @@ paths:
       operationId: reindex_rethrottle.0
       x-operation-group: reindex_rethrottle
       x-version-added: '1.0'
-      description: Changes the number of requests per second for a particular Reindex operation.
+      description: Changes the number of requests per second for a particular reindex operation.
       externalDocs:
         url: https://opensearch.org/docs/latest
       parameters:
@@ -3338,8 +3338,9 @@ components:
                 format: int64
               _version:
                 $ref: '../schemas/_common.yaml#/components/schemas/VersionNumber'
+              _type:
+                $ref: '../schemas/_common.yaml#/components/schemas/Type'
             required:
-              - _id
               - _index
               - _version
               - found
diff --git a/spec/schemas/_core.msearch_template.yaml b/spec/schemas/_core.msearch_template.yaml
index f9e164e84..c87bbc3da 100644
--- a/spec/schemas/_core.msearch_template.yaml
+++ b/spec/schemas/_core.msearch_template.yaml
@@ -25,7 +25,9 @@ components:
             The value is the variable value.
           type: object
           additionalProperties:
-            type: object
+            oneOf:
+              - type: string
+              - type: object
         profile:
           description: When `true`, provides a profile for the query execution.
           type: boolean
diff --git a/spec/schemas/_core.mtermvectors.yaml b/spec/schemas/_core.mtermvectors.yaml
index deae8eda6..503dccafb 100644
--- a/spec/schemas/_core.mtermvectors.yaml
+++ b/spec/schemas/_core.mtermvectors.yaml
@@ -62,6 +62,8 @@ components:
             $ref: '_core.termvectors.yaml#/components/schemas/TermVector'
         error:
           $ref: '_common.yaml#/components/schemas/ErrorCause'
+        _type:
+          $ref: '_common.yaml#/components/schemas/Type'
       required:
         - _id
         - _index
diff --git a/spec/schemas/_core.reindex_rethrottle.yaml b/spec/schemas/_core.reindex_rethrottle.yaml
index 877dc024c..bc5ce3a8a 100644
--- a/spec/schemas/_core.reindex_rethrottle.yaml
+++ b/spec/schemas/_core.reindex_rethrottle.yaml
@@ -24,12 +24,16 @@ components:
           type: string
         cancellable:
           type: boolean
+        cancelled:
+          type: boolean
         description:
           type: string
         id:
           type: number
         node:
           $ref: '_common.yaml#/components/schemas/Name'
+        resource_stats:
+          $ref: '_common.yaml#/components/schemas/ResourceStats'
         running_time_in_nanos:
           $ref: '_common.yaml#/components/schemas/DurationValueUnitNanos'
         start_time_in_millis:
diff --git a/tests/default/_core/msearch.yaml b/tests/default/_core/msearch/index.yaml
similarity index 61%
rename from tests/default/_core/msearch.yaml
rename to tests/default/_core/msearch/index.yaml
index 6cff72802..7cb893404 100644
--- a/tests/default/_core/msearch.yaml
+++ b/tests/default/_core/msearch/index.yaml
@@ -1,4 +1,4 @@
-$schema: ../../../json_schemas/test_story.schema.yaml
+$schema: ../../../../json_schemas/test_story.schema.yaml
 
 description: Test document multi-search.
 epilogues:
@@ -25,7 +25,9 @@ prologues:
 chapters:
   - synopsis: Run multiple search requests in single request (GET).
     path: /_msearch
-    method: GET
+    method: 
+      - GET
+      - POST
     request:
       content_type: application/x-ndjson
       payload:
@@ -52,34 +54,4 @@ chapters:
                 - _index: movies
                   _id: movie1
                 - _index: movies
-                  _id: movie2
-  - synopsis: Run multiple search requests in single request (POST).
-    path: /_msearch
-    method: POST
-    request:
-      content_type: application/x-ndjson
-      payload:
-        - {index: movies}
-        - {query: {match_all: {}}}
-        - {index: books}
-        - {query: {match_all: {}}}
-    response:
-      status: 200
-      payload:
-        responses:
-          - hits:
-              total:
-                value: 2
-                relation: eq
-              hits:
-                - _index: movies
-                  _id: movie1
-                - _index: movies
-                  _id: movie2
-          - hits:
-              total:
-                value: 1
-                relation: eq
-              hits:
-                - _index: books
-                  _id: book1
+                  _id: movie2
\ No newline at end of file
diff --git a/tests/default/_core/msearch/template.yaml b/tests/default/_core/msearch/template.yaml
new file mode 100644
index 000000000..f1246f644
--- /dev/null
+++ b/tests/default/_core/msearch/template.yaml
@@ -0,0 +1,35 @@
+$schema: ../../../../json_schemas/test_story.schema.yaml
+
+description: Test _msearch/template APIs.
+prologues:  
+  - path: /_bulk
+    method: POST
+    parameters:
+      refresh: true
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {create: {_index: books, _id: book1}}
+        - {author: Harper Lee, title: To Kill a Mockingbird, year: 1960}
+        - {create: {_index: books, _id: book2}}
+        - {author: Elizabeth Rudnick, title: Beauty and the Beast, year: 1991}
+        - {create: {_index: books, _id: book3}}
+        - {author: George Orwell, title: '1984', year: 1949}
+epilogues:
+  - path: /books
+    method: DELETE
+    status: [200, 404]
+
+chapters:
+  - synopsis: Perform a multi-search template query using a GET request.
+    path: /_msearch/template
+    method:
+      - GET
+      - POST
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {index: books}
+        - {source: '{"query": {"match": {"title": "{{title}}"}}}', params: {title: Mockingbird}}
+        - {index: books}
+        - {source: '{"query": {"match": {"title": "{{title}}"}}}', params: {title: Beast}}
\ No newline at end of file
diff --git a/tests/default/_core/mtermvectors.yaml b/tests/default/_core/mtermvectors.yaml
new file mode 100644
index 000000000..497abd3ff
--- /dev/null
+++ b/tests/default/_core/mtermvectors.yaml
@@ -0,0 +1,44 @@
+$schema: ../../../json_schemas/test_story.schema.yaml
+
+description: Test _mtermvectors APIs.
+prologues:
+  - path: /books
+    method: PUT
+    request:
+      payload:
+        mappings:
+          properties:
+            author:
+              type: text
+            title:
+              term_vector: yes
+              type: text
+            year:
+              type: integer     
+  - path: /_bulk
+    method: POST
+    parameters:
+      refresh: true
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {create: {_index: books, _id: book1}}
+        - {author: Harper Lee, title: To Kill a Mockingbird, year: 1960}
+        - {create: {_index: books, _id: book2}}
+        - {author: Elizabeth Rudnick, title: Beauty and the Beast, year: 1991}
+epilogues:
+  - path: /books
+    method: DELETE
+    status: [200, 404]
+
+chapters:
+  - synopsis: Retrieve term vectors for specific documents.
+    path: /_mtermvectors
+    method:
+      - GET
+      - POST
+    request:
+      payload:
+        docs:
+          - _id: book1
+            _index: books
\ No newline at end of file
diff --git a/tests/default/_core/reindex/rethrottle.yaml b/tests/default/_core/reindex/rethrottle.yaml
new file mode 100644
index 000000000..0f9ef01de
--- /dev/null
+++ b/tests/default/_core/reindex/rethrottle.yaml
@@ -0,0 +1,44 @@
+$schema: ../../../../json_schemas/test_story.schema.yaml
+
+description: Test changing the number of requests per second for a particular reindex operation.
+epilogues:
+  - path: /movies
+    method: DELETE
+    status: [200, 404]
+  - path: /videos
+    method: DELETE
+    status: [200, 404]
+prologues:
+  - path: /{index}/_doc
+    method: POST
+    parameters:
+      index: movies
+      refresh: true
+    request:
+      payload:
+        title: Beauty and the Beast
+        year: 91
+    status: [201]
+  - id: task
+    path: /_reindex
+    method: POST
+    parameters:
+      wait_for_completion: false
+      requests_per_second: 1
+    request:
+      payload:
+        source:
+          index: movies
+        dest:
+          index: videos
+    output:
+      task_id: payload.task
+chapters:
+  - synopsis: Change the value of `requests_per_second` on a running reindex.
+    path: /_reindex/{task_id}/_rethrottle
+    method: POST
+    parameters:
+      task_id: ${task.task_id}
+      requests_per_second: 2
+    response:
+      status: 200
diff --git a/tests/default/_core/stats.yaml b/tests/default/_core/stats.yaml
new file mode 100644
index 000000000..98d898ce7
--- /dev/null
+++ b/tests/default/_core/stats.yaml
@@ -0,0 +1,25 @@
+$schema: ../../../json_schemas/test_story.schema.yaml
+
+description: Test stats.
+chapters:
+  - synopsis: Get global stats.
+    path: /_stats
+    method: GET
+    response:
+      status: 200
+  - synopsis: Get global stats with human fields.
+    path: /_stats
+    method: GET
+    parameters:
+      human: true
+    response:
+      status: 200
+  - synopsis: Get stats for a given metric.
+    path: /_stats/{metric}
+    method: GET
+    parameters:
+      metric: docs
+      expand_wildcards: all
+      forbid_closed_indices: false
+      groups: '*'
+      level: indices
diff --git a/tests/default/indices/delete_by_query/rethrottle.yaml b/tests/default/indices/delete_by_query/rethrottle.yaml
index 17507b0c3..3169ab20b 100644
--- a/tests/default/indices/delete_by_query/rethrottle.yaml
+++ b/tests/default/indices/delete_by_query/rethrottle.yaml
@@ -30,7 +30,7 @@ prologues:
     output:
       task_id: payload.task
 chapters:
-  - synopsis: Change the value of `requests_per_second``on a running delete by query.
+  - synopsis: Change the value of `requests_per_second` on a running delete by query.
     path: /_delete_by_query/{task_id}/_rethrottle
     method: POST
     parameters:
diff --git a/tests/default/indices/msearch.yaml b/tests/default/indices/msearch/index.yaml
similarity index 87%
rename from tests/default/indices/msearch.yaml
rename to tests/default/indices/msearch/index.yaml
index ba5cd97eb..53fbb7122 100644
--- a/tests/default/indices/msearch.yaml
+++ b/tests/default/indices/msearch/index.yaml
@@ -1,4 +1,4 @@
-$schema: ../../../json_schemas/test_story.schema.yaml
+$schema: ../../../../json_schemas/test_story.schema.yaml
 
 description: Test endpoints relevant to the lifecycle of an index, including multi-get and multi-search operations.
 prologues:
@@ -22,7 +22,9 @@ epilogues:
 chapters:
   - synopsis: Perform a `_msearch` request to execute multiple search queries in a single call.
     path: /{index}/_msearch
-    method: POST
+    method:
+      - GET
+      - POST
     parameters:
       index: books
     request:
@@ -31,6 +33,4 @@ chapters:
         - {index: books}
         - {query: {match: {title: To Kill a Mockingbird}}}
         - {index: books}
-        - {query: {match: {title: The Cruise}}}
-    response:
-      status: 200
\ No newline at end of file
+        - {query: {match: {title: The Cruise}}}
\ No newline at end of file
diff --git a/tests/default/indices/msearch/template.yaml b/tests/default/indices/msearch/template.yaml
new file mode 100644
index 000000000..0586dc449
--- /dev/null
+++ b/tests/default/indices/msearch/template.yaml
@@ -0,0 +1,37 @@
+$schema: ../../../../json_schemas/test_story.schema.yaml
+
+description: Test _msearch/template APIs.
+prologues:  
+  - path: /_bulk
+    method: POST
+    parameters:
+      refresh: true
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {create: {_index: books, _id: book1}}
+        - {author: Harper Lee, title: To Kill a Mockingbird, year: 1960}
+        - {create: {_index: books, _id: book2}}
+        - {author: Elizabeth Rudnick, title: Beauty and the Beast, year: 1991}
+        - {create: {_index: books, _id: book3}}
+        - {author: George Orwell, title: '1984', year: 1949}
+epilogues:
+  - path: /books
+    method: DELETE
+    status: [200, 404]
+
+chapters:
+  - synopsis: Perform a multi-search template query using a GET request.
+    path: /{index}/_msearch/template
+    parameters:
+      index: books
+    method:
+      - GET
+      - POST
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {index: books}
+        - {source: '{"query": {"match": {"title": "{{title}}"}}}', params: {title: Mockingbird}}
+        - {index: books}
+        - {source: '{"query": {"match": {"title": "{{title}}"}}}', params: {title: Beast}}
\ No newline at end of file
diff --git a/tests/default/indices/mtermvectors.yaml b/tests/default/indices/mtermvectors.yaml
new file mode 100644
index 000000000..e9a7978ed
--- /dev/null
+++ b/tests/default/indices/mtermvectors.yaml
@@ -0,0 +1,45 @@
+$schema: ../../../json_schemas/test_story.schema.yaml
+
+description: Test _mtermvectors APIs.
+prologues:
+  - path: /books
+    method: PUT
+    request:
+      payload:
+        mappings:
+          properties:
+            author:
+              type: text
+            title:
+              term_vector: yes
+              type: text
+            year:
+              type: integer     
+  - path: /_bulk
+    method: POST
+    parameters:
+      refresh: true
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {create: {_index: books, _id: book1}}
+        - {author: Harper Lee, title: To Kill a Mockingbird, year: 1960}
+        - {create: {_index: books, _id: book2}}
+        - {author: Elizabeth Rudnick, title: Beauty and the Beast, year: 1991}
+epilogues:
+  - path: /books
+    method: DELETE
+    status: [200, 404]
+
+chapters:
+  - synopsis: Retrieve term vectors for specific documents in an index.
+    path: /{index}/_mtermvectors
+    parameters:
+      index: books
+    method:
+      - GET
+      - POST
+    request:
+      payload:
+        docs:
+          - _id: book1
\ No newline at end of file
diff --git a/tests/default/indices/stats.yaml b/tests/default/indices/stats.yaml
index 24caa7e2f..32e881b34 100644
--- a/tests/default/indices/stats.yaml
+++ b/tests/default/indices/stats.yaml
@@ -9,18 +9,6 @@ epilogues:
     method: DELETE
     status: [200, 404]
 chapters:
-  - synopsis: Get global stats.
-    path: /_stats
-    method: GET
-    response:
-      status: 200
-  - synopsis: Get global stats with human fields.
-    path: /_stats
-    method: GET
-    parameters:
-      human: true
-    response:
-      status: 200
   - synopsis: Get stats for an index.
     path: /{index}/_stats
     method: GET
diff --git a/tests/default/indices/termvectors.yaml b/tests/default/indices/termvectors.yaml
new file mode 100644
index 000000000..da53e1038
--- /dev/null
+++ b/tests/default/indices/termvectors.yaml
@@ -0,0 +1,53 @@
+$schema: ../../../json_schemas/test_story.schema.yaml
+
+description: Test _termvectors APIs.
+prologues:
+  - path: /books
+    method: PUT
+    request:
+      payload:
+        mappings:
+          properties:
+            author:
+              type: text
+            title:
+              term_vector: yes
+              type: text
+            year:
+              type: integer     
+  - path: /_bulk
+    method: POST
+    parameters:
+      refresh: true
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {create: {_index: books, _id: book1}}
+        - {author: Harper Lee, title: To Kill a Mockingbird, year: 1960}
+        - {create: {_index: books, _id: book2}}
+        - {author: Elizabeth Rudnick, title: Beauty and the Beast, year: 1991}
+epilogues:
+  - path: /books
+    method: DELETE
+    status: [200, 404]
+
+chapters:
+  - synopsis: Get term vectors for a specific index.
+    path: /{index}/_termvectors
+    parameters:
+      index: books
+    method:
+      - GET
+      - POST
+    request:
+      payload:
+        doc:
+          title: To kill
+  - synopsis: Get term vectors for a document by its ID.
+    path: /{index}/_termvectors/{id}
+    parameters:
+      index: books
+      id: book1
+    method: 
+      - GET
+      - POST
\ No newline at end of file
diff --git a/tests/plugins/security/_core/settings.yaml b/tests/plugins/security/_core/settings.yaml
new file mode 100644
index 000000000..743bc4a49
--- /dev/null
+++ b/tests/plugins/security/_core/settings.yaml
@@ -0,0 +1,15 @@
+$schema: ../../../../json_schemas/test_story.schema.yaml
+
+description: Test settings.
+chapters:
+  - synopsis: Update cluster settings.
+    path: /_settings
+    method: PUT
+    request:
+      payload:
+        settings:
+          index:
+            number_of_replicas: 4
+  - synopsis: Get settings.
+    path: /_settings
+    method: GET