[Bug #239685] Adaptive Server version 12.5 fails when executing a server-to-server remote procedure call (RPC) against an earlier version of Adaptive Server if the remote server predates a fix made under CR #210796.
Workaround: To execute an RPC successfully from a version 12.5 Adaptive Server, your remote Adaptive Server must be one of the following:
184.108.40.206 or later within this release
220.127.116.11 or later within this release
18.104.22.168 or later within this release