diff --git a/api/pmt.yml b/api/pmt.yml
index 9ed8d2d..f3ed8a5 100644
--- a/api/pmt.yml
+++ b/api/pmt.yml
@@ -77,12 +77,30 @@ components:
         text/plain:
           schema:
             type: string
+    Conflict:
+      description: "Conflict"
+      content:
+        text/plain:
+          schema:
+            type: string
+    UnprocessableContent:
+      description: "Unprocessable Content"
+      content:
+        text/plain:
+          schema:
+            type: string
     InternalError:
       description: "Internal Server Error"
       content:
         text/plain:
           schema:
             type: string
+    ServiceUnavailable:
+      description: "Service Unavailable"
+      content:
+        text/plain:
+          schema:
+            type: string
 paths:
   /project:
     get:
@@ -118,5 +136,11 @@ paths:
           $ref: "#/components/responses/Unauthorized"
         404:
           $ref: "#/components/responses/NotFound"
+        409:
+          $ref: "#/components/responses/Conflict"
+        422:
+          $ref: "#/components/responses/UnprocessableContent"
         500:
-          $ref: "#/components/responses/InternalError"
\ No newline at end of file
+          $ref: "#/components/responses/InternalError"
+        503:
+          $ref: "#/components/responses/ServiceUnavailable"
\ No newline at end of file