Diagnosis
You want to process an object (for example, a BOM or document) withreference to the change number of an ECR.

System Response
The system checks the system status of the ECR (change header). Thesystem status is set to "locked", so you cannot process objects withreference to this change master record.

Procedure
You cannot change a change object with reference to this ECR unless thesystem status is changed ("Unlock").
Change ECR