diff --git a/contracts/cloud.json b/contracts/cloud.json
index 636f9c7b..4ead1640 100644
--- a/contracts/cloud.json
+++ b/contracts/cloud.json
@@ -5452,6 +5452,35 @@
               }
             }
           },
+          "413": {
+            "description": "Template too large",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "allOf": [
+                    {
+                      "$ref": "#/components/schemas/TemplateSummary"
+                    },
+                    {
+                      "type": "object",
+                      "required": [
+                        "message",
+                        "code"
+                      ],
+                      "properties": {
+                        "message": {
+                          "type": "string"
+                        },
+                        "code": {
+                          "type": "string"
+                        }
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
           "422": {
             "description": "Template failed validation",
             "content": {
diff --git a/contracts/cloud.yml b/contracts/cloud.yml
index 86001208..6115100e 100644
--- a/contracts/cloud.yml
+++ b/contracts/cloud.yml
@@ -3564,6 +3564,22 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/TemplateSummary'
+        '413':
+          description: Template too large
+          content:
+            application/json:
+              schema:
+                allOf:
+                  - $ref: '#/components/schemas/TemplateSummary'
+                  - type: object
+                    required:
+                      - message
+                      - code
+                    properties:
+                      message:
+                        type: string
+                      code:
+                        type: string
         '422':
           description: Template failed validation
           content:
diff --git a/contracts/common.yml b/contracts/common.yml
index 489f9f33..68351386 100644
--- a/contracts/common.yml
+++ b/contracts/common.yml
@@ -3446,6 +3446,22 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/TemplateSummary'
+        '413':
+          description: Template too large
+          content:
+            application/json:
+              schema:
+                allOf:
+                  - $ref: '#/components/schemas/TemplateSummary'
+                  - type: object
+                    required:
+                      - message
+                      - code
+                    properties:
+                      message:
+                        type: string
+                      code:
+                        type: string
         '422':
           description: Template failed validation
           content:
diff --git a/contracts/oss.json b/contracts/oss.json
index 74cbd876..3e569239 100644
--- a/contracts/oss.json
+++ b/contracts/oss.json
@@ -5456,6 +5456,35 @@
               }
             }
           },
+          "413": {
+            "description": "Template too large",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "allOf": [
+                    {
+                      "$ref": "#/components/schemas/TemplateSummary"
+                    },
+                    {
+                      "type": "object",
+                      "required": [
+                        "message",
+                        "code"
+                      ],
+                      "properties": {
+                        "message": {
+                          "type": "string"
+                        },
+                        "code": {
+                          "type": "string"
+                        }
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
           "422": {
             "description": "Template failed validation",
             "content": {
diff --git a/contracts/oss.yml b/contracts/oss.yml
index 2d31a1e9..ff1ef332 100644
--- a/contracts/oss.yml
+++ b/contracts/oss.yml
@@ -3570,6 +3570,22 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/TemplateSummary'
+        '413':
+          description: Template too large
+          content:
+            application/json:
+              schema:
+                allOf:
+                  - $ref: '#/components/schemas/TemplateSummary'
+                  - type: object
+                    required:
+                      - message
+                      - code
+                    properties:
+                      message:
+                        type: string
+                      code:
+                        type: string
         '422':
           description: Template failed validation
           content:
diff --git a/contracts/ref/cloud.yml b/contracts/ref/cloud.yml
index 11552679..608da296 100644
--- a/contracts/ref/cloud.yml
+++ b/contracts/ref/cloud.yml
@@ -11436,6 +11436,22 @@ paths:
                 $ref: '#/components/schemas/TemplateSummary'
           description: |
             Success. The package applied successfully. Returns a diff and summary of the run. The summary contains newly created resources. The diff compares the initial state to the state after the package applied. This corresponds to `"dryRun": true`.
+        "413":
+          content:
+            application/json:
+              schema:
+                allOf:
+                - $ref: '#/components/schemas/TemplateSummary'
+                - properties:
+                    code:
+                      type: string
+                    message:
+                      type: string
+                  required:
+                  - message
+                  - code
+                  type: object
+          description: Template too large
         "422":
           content:
             application/json:
diff --git a/contracts/ref/oss.yml b/contracts/ref/oss.yml
index a4ccbb6e..c2b891ee 100644
--- a/contracts/ref/oss.yml
+++ b/contracts/ref/oss.yml
@@ -13404,6 +13404,22 @@ paths:
                 $ref: '#/components/schemas/TemplateSummary'
           description: |
             Success. The package applied successfully. Returns a diff and summary of the run. The summary contains newly created resources. The diff compares the initial state to the state after the package applied. This corresponds to `"dryRun": true`.
+        "413":
+          content:
+            application/json:
+              schema:
+                allOf:
+                - $ref: '#/components/schemas/TemplateSummary'
+                - properties:
+                    code:
+                      type: string
+                    message:
+                      type: string
+                  required:
+                  - message
+                  - code
+                  type: object
+          description: Template too large
         "422":
           content:
             application/json:
diff --git a/src/README.md b/src/README.md
index a26cf2e4..c6a8d8d1 100644
--- a/src/README.md
+++ b/src/README.md
@@ -1,8 +1,8 @@
 # When APIs Drift
 
-Within this (`src`) directory, you will find all API resource definitions. OSS/Cloud specific resources are defined in the `src/oss` and `src/cloud` directories respectively. When a shared type drifts, it will need to be removed from `common` and placed into the resource type's directory within the platform (cloud/oss) specific directory. Caution should be exercized so as to avoid stale references in complex resource types.
+Within this (`src`) directory, you will find all API resource definitions. OSS/Cloud specific resources are defined in the `src/oss` and `src/cloud` directories respectively. When a shared type drifts, it will need to be removed from `common` and placed into the resource type's directory within the platform (cloud/oss) specific directory. Caution should be exercised to avoid stale references in complex resource types.
 
-For example if it there was some cloud only changes to the `AddResourceMemberRequestBody` type, one would:
+If there was some cloud only changes to the `AddResourceMemberRequestBody` type, one would:
 ```sh
 # copy the type to the platform where the type has changed
 copy src/common/schemas/AddResourceMemberRequestBody.yml src/cloud/schemas/AddResourceMemberRequestBody.yml
diff --git a/src/common/paths/templates_apply.yml b/src/common/paths/templates_apply.yml
index 10ecccfc..0fd94b1c 100644
--- a/src/common/paths/templates_apply.yml
+++ b/src/common/paths/templates_apply.yml
@@ -41,6 +41,12 @@ post:
         application/json:
           schema:
             $ref: "../schemas/TemplateSummary.yml"
+    "413":
+      description: Template too large
+      content:
+        application/json:
+          schema:
+            $ref: "../schemas/TemplateTooLargeError.yml"
     "422":
       description: Template failed validation
       content:
diff --git a/src/common/schemas/TemplateTooLargeError.yml b/src/common/schemas/TemplateTooLargeError.yml
new file mode 100644
index 00000000..f489e3ed
--- /dev/null
+++ b/src/common/schemas/TemplateTooLargeError.yml
@@ -0,0 +1,9 @@
+  allOf:
+  - $ref: "./TemplateSummary.yml"
+  - type: object
+    required: [message, code]
+    properties:
+      message:
+        type: string
+      code:
+        type: string