Description of problem:

Request failed with status code 400 when editing an application associated with credentials

Version-Release number of selected component (if applicable):

upstream-main

How reproducible:

100%

Steps to reproduce:

1. Create an application
2. Attach credentials
3. Try to edit the application details

Actual results:

Request failed with status code 400

Attachments:

[^update-error.png]

Additional info:

This is a regression from MTA 7.0.3