Logical system does not exist.

What causes this issue?

In order for the update to be carried out, the logical system must be
entered in each data record. However, it is not entered in one of the
data records.

System Response

Data is not updated.

How to fix this error?

If you are using your own program for the data selection, make sure
that the logical system is entered in each data record. If you are
using standard SAP programs, contact the SAP Hotline.

Error message extract from SAP system. Copyright SAP SE.