I cannot imagine anyone being willing to implement an "RMODE MIN" whose only purpose is to allow you to specify an RMODE statement multiple times in one CSECT with different values.
Functionally, at the cost of 8 bytes (and it conceivably can be accomplished with 0, but I have not tried), state the problem clearly and do not assume a solution: Apparently, you want, at the end of the "module source", to indicate that, despite what someone might have coded earlier in the source, that you really want RMODE 24. Then perhaps just add DUMMY CSECT DUMMY RMODE 24 NOPR 0 immediately before the END The assembly will work fine. And when you bind it, the "minimum" across the CSECTs is what will by default be used. Peter Relson z/OS Core Technology Design