&: Original material & from import file does not exist

What causes this issue?

The original material specified for the follow-up/replacement material
relationship in the import file is not defined n the material master.

System Response

The system does not create, change, or delete the follow-up/replacement
material relationship.

How to fix this error?

Specify an original material with a defined material master in the
import file.

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.