Forum Discussion
KnipperLucas
Dec 19, 2025Copper Contributor
Validation rule for postal code is being ignored
In the SharePoint list, there is a column “Country” and a column “Postal Code.” A validation rule has been configured in the list validation settings to ensure that when the country “Germany” is sele...
KnipperLucas
Jan 13, 2026Copper Contributor
Hello virendrak,
Thank you for your reply and your idea.
We found out that the problem was caused by a column. The issue came from a column that was not working correctly because the list elements for the lookup column (Nachschlagespalte) was missing.
By adding the list elements, we solved the problem.
Best regards,
Lucas