Description of problem:

Failed to delete credential associated with a custom migration target

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

mta-operator-bundle-container-7.0.0-28

How reproducible:

100%

Steps to Reproduce:

1. As administrator, create a source credential
2. Go to Custom migration targets -> Click "Create new"
3. Select "Retrieve from a repository" -> fill the required fields and attach the created credentials -> Click "Create"
3. Try to delete the associated credential

Actual results:

The operation fails with error: FOREIGN KEY constraint failed

Expected results:

The "Delete" button is disable as long as the credential is associated with a custom target + informative tooltip
OR make the error message more informative

Attachments:

creds_delete_error.png