When defining assignment rules, create line IDs with the category 'Costs'

What causes this issue?

You have entered an incorrect value in field JEXPOZINS

System Response

The transferred record will not be processed.

How to fix this error?

For this purpose use only the values 'X', SPACE or initial.

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.