** ASMA000E Message not known - nnn

The statement preceding this message contains an error but the assembler routine that detected the error issued the number (nnn) of a nonexistent error message to the assembler's message generation routine. If you can correct the error, this statement assembles correctly. However, this message indicates an error in the error detection process of the assembler. Save the output and the source files from this assembly and report the problem to your IBM service representative.