SAP Message AM326 - Assignment of communication type & comments to be inserted not unique

Diagnosis
You tried to create a communication address and assign a comment to itusing a serial number which is already used for an existingcommunication address in the database.

System Response
The system cannot decide whether the comment is to be created for thenew communication address or the existing communication address in thedatabase.

Procedure
Use a serial number which is not used for existing communicationaddress in the database for the new communication address and itscomment.