Custom Value set says value ABC Not in the list of values

Summary:

Hi Everyone,

We have a requirement to create a custom field " Shift " on Assignment page with list of values and the field is not mandatory.

We have created a value set with list of values and then attached it to the DFF. While we are submitting any transaction, getting an error which says " Shift N is not in the values even we leave this field as blank.

Any comments here ?

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