Period indicator missing

What causes this issue?

In the transfer of key figures from CO-PA to LIS; the period indicator
is missing.

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?

Check the outbound data in in CO-PA and the data selection when you
start the transfer transaction.

Error message extract from SAP system. Copyright SAP SE.