Comparing New Assignment Field Value with Existing Assignment Field Value

Summary:

How to compare value of a new Assignment (say Business Unit) with already existing assignment for an individual

Flow: Add Assignment

Content (required):

We want to ensure that when we "Add Assignment" the BU (Business Unit) value used should not be equal to any of the previous assignment.

In case this happens a warning message should be displayed.

Wondering if any of you have achieved similar requirement, any tips or guidance would be appreciated.

Version (include the version you are using, if applicable):

22C

Code Snippet (add any code snippets that support your topic, if applicable):

NA