SAP Message 881030 - Content ID key is still used. Cannot delete.

Diagnosis The selected content ID is still used in the REAmaster data. System Response The content ID cannot be deleted. Procedure First delete the content ID from the REA master data. To do this, chooseREA Information Systems -> Assignment -> Article to ->Recycling Partner or Article to ->Packaging (Recycling Partner-Dependent) orPackaging to -> Recycling Partner. Instead of deleting, you can suppress the use of the content ID bydeactivating it.