For payment term & the day limit & is not defined

What causes this issue?

The terms of payment change depending on the base day. However, not all
base days were taken into account for the definition in table T052.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Correct the entry in table T052. Make sure that there is always an
entry with day limit 31 (last day of the month) for daily terms of
payments.

Error message extract from SAP system. Copyright SAP SE.