Your exit routine can set bit ADPLPOAC. If the acronym in the model is blank, the bit is ignored. The acronym in the model is compared with the contents of the dump at the offset and length specified in the model. If the comparison fails, a message is issued (unless error messages are suppressed by setting bit ADPLNMSG), no formatting is done, and bit ADPLPRAC is set to indicate that the control block failed the acronym check.