diff --git a/doc/testing/testplan/api_security_service/README.md b/doc/testing/testplan/api_security_service/README.md
index 9ce8a8f4da492a5a30f632b27c38d37973c7bc52..e06d162313179962a34530f580d70713b232ccc5 100644
--- a/doc/testing/testplan/api_security_service/README.md
+++ b/doc/testing/testplan/api_security_service/README.md
@@ -1100,7 +1100,7 @@ At this documentation you will have all information and related files and exampl
 
   1. Response to Request of Access Token:
      1. **400 Bad Request** response.
-     2. body returned must accomplish **AccessTokenErr** data structure, with:
+     2. body returned must accomplish **ProblemDetails** data structure, with:
         * title=Bad Request
         * detail='not_valid' is not one of \\['client_credentials', 'authorization_code'\\] - 'grant_type'
         * status=400