Error occurred when transferring data to module &1

What causes this issue?

Errors occurred in module &V1& when copying data to the APO system.

System Response

The data may not have been copied at all or copied incompletely.

How to fix this error?

Check the APO and the R/3 system application logs to determine the
exact cause of the errors.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.