diff --git a/specs/adc-api-openapi3.yaml b/specs/adc-api-openapi3.yaml
index 848e40cb9..847bc8bda 100644
--- a/specs/adc-api-openapi3.yaml
+++ b/specs/adc-api-openapi3.yaml
@@ -1051,13 +1051,25 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/error_response'
+        '408':
+          description: Operation timed out
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/error_response'
+        '413':
+          description: Content too large, max_size or max_query_size exceeded
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/error_response'
         '500':
           description: Server error
           content:
             application/json:
               schema:
                 $ref: '#/components/schemas/error_response'
-  
+
   /reactivity:
     post:
       description: >
@@ -1084,6 +1096,18 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/error_response'
+        '408':
+          description: Operation timed out
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/error_response'
+        '413':
+          description: Content too large, max_size or max_query_size exceeded
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/error_response'
         '500':
           description: Server error
           content:
diff --git a/specs/adc-api.yaml b/specs/adc-api.yaml
index fda385b86..728dd1cc1 100644
--- a/specs/adc-api.yaml
+++ b/specs/adc-api.yaml
@@ -1091,6 +1091,18 @@ paths:
           description: Invalid request
           schema:
             $ref: '#/definitions/error_response'
+        '408':
+          description: Operation timed out
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/error_response'
+        '413':
+          description: Content too large, max_size or max_query_size exceeded
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/error_response'
         '500':
           description: Server error
           schema:
@@ -1144,6 +1156,18 @@ paths:
           description: Invalid request
           schema:
             $ref: '#/definitions/error_response'
+        '408':
+          description: Operation timed out
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/error_response'
+        '413':
+          description: Content too large, max_size or max_query_size exceeded
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/error_response'
         '500':
           description: Server error
           schema: