A valid record already exists for this cost assignment

What causes this issue?

There is either a construction site or a location that points to the
same cost assignment as the record that you want to create.
As a result, the corresponding expenses will not be calculated in
payroll accounting.

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?

Choose a different construction site or location.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.