Diagnosis
You set the Priority flag for the follow-up type of thefollow-up/replacement material relationship in Customizing. When thisflag is set, you have to specify a priority for thefollow-up/replacement material relationship.

System Response
The system cannot create, change, or delete the follow-up/replacementmaterial relationship.

Procedure
Specify a priority for the follow-up/replacement material relationshipin the import file.