SAP Message CACSIB082 - Unknown document type '&1'

Diagnosis
You are attempting to post a document of type &v1&. This document typeis not a standard document type delivered by SAP.

System Response
The document is not posted.

Procedure
If this error occurs while posting a manual document in the interface orby external data transfer, you should first check the input data,especially the Document Type field.
Postings in processes should not trigger this error message. However ifthis case does arise, contact SAP support for an analysis and solutionof the problem.