diff --git a/api/pmt.yml b/api/pmt.yml
index 9918049..c339ada 100644
--- a/api/pmt.yml
+++ b/api/pmt.yml
@@ -86,12 +86,6 @@ components:
         text/plain:
           schema:
             type: string
-    NotAcceptable:
-      description: "Not Acceptable"
-      content:
-        text/plain:
-          schema:
-            type: string
     Conflict:
       description: "Conflict"
       content:
@@ -184,10 +178,10 @@ paths:
           $ref: "#/components/responses/Unauthorized"
         404:
           $ref: "#/components/responses/NotFound"
-        406:
-          $ref: "#/components/responses/NotAcceptable"
         409:
             $ref: "#/components/responses/Conflict"
+        422:
+          $ref: "#/components/responses/UnprocessableContent"
         500:
           $ref: "#/components/responses/InternalError"
 
@@ -213,4 +207,4 @@ paths:
               schema:
                 type: string
         500:
-          $ref: "#/components/responses/InternalError"
\ No newline at end of file
+          $ref: "#/components/responses/InternalError"