You can only enter a default consumption segment

What causes this issue?

More than two entries have been selected for saving. However, you can
only select one consumption segment as a default segment.

System Response

The incorrect entries were not saved.

How to fix this error?

Only make one entry.

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.