Introduced in version: 1.3 (29 Jan 2020)
Only applies to associations where the delete behavior is set to “delete only if not associated with” (see screenshot below). These associations are colored blue in Mendix Studio.
The error message is there to help the user understand why a delete is not allowed. Without it, users might think the system is not behaving correctly.
Noncompliant example:
Compliant example:
