Change in NACR procedures

2. ACKs/NACKs for NACRs will no longer be required, and in fact,
will be ignored if received.

How does someone indicate that they have a problem w/ a NACR & that it
should not be processed until further checking? Or is it just the last
NACR sent the one that is done? [NACR wars...]
  --asp@uunet.uu.net (Andrew Partan)