The messages have the format:

8cccnnnn

where	8ccc	is the message class in the range 8001-8999, and
	nnnn	is the message number in the range 0000 - 9999

Error messages in classes starting with 8, that is, in the range of 8001nnnn through 8999nnnn, are reserved for customer use.

These error messages are given by customer applications with the function REPLY_ERROR. See REPLY_ERROR under Broker ACI Functions.