I actually think it is a SAP defined error message, however it is not findable in the SAP table for messages: T100
Searching with google using the exact message gave me a hit in the SAPfans forum from 2004, unfortunately this user did as well not mention the error message number.
I dont think that 2 companies have exact the same wording in owndefined messages, it could be a message from an add-on or a special industry solution.
for a solution it would certainly help that the poster of this question provides the message number (double click the message to find the message number)