diff --git a/common/responses/errors.openapi.yaml b/common/responses/errors.openapi.yaml
index 16d2520..3946eab 100644
--- a/common/responses/errors.openapi.yaml
+++ b/common/responses/errors.openapi.yaml
@@ -67,6 +67,13 @@ components:
         application/json:
           schema:
             $ref: "../schemas/Error.openapi.yaml#/components/schemas/Error"
+    Error-413:
+      description: Request Payload Too Large
+      content:
+        application/json:
+          schema:
+            $ref: "../schemas/Error.openapi.yaml#/components/schemas/Error"
+
     Error-500:
       description: Internal Server Error
       content:
diff --git a/tools/attachment/attachment.openapi.yaml b/tools/attachment/attachment.openapi.yaml
index 6865995..7f2a083 100644
--- a/tools/attachment/attachment.openapi.yaml
+++ b/tools/attachment/attachment.openapi.yaml
@@ -153,6 +153,8 @@ paths:
           $ref: "../../common/responses/errors.openapi.yaml#/components/responses/Error-406"
         "409":
           $ref: "../../common/responses/errors.openapi.yaml#/components/responses/Error-409"
+        "413":
+          $ref: "../../common/responses/errors.openapi.yaml#/components/responses/Error-413"
         "500":
           $ref: "../../common/responses/errors.openapi.yaml#/components/responses/Error-500"
         "501":