[CR# 425309] If Replication Monitoring Services (RMS) is connected to (monitoring) a Mirror Replication Agent and the Mirror Replication Agent has turned on tracing, this error may appears in the agent's log:
Got login event: sa Maintenance user <sa> successfully logged in from host=<chooch> with locale=us_english Got RPC event from TDS: sp_mdareceive() - cmd: sp_mda <1>, <7> Illegal command: <sp_mda>, received: - Received execution status for sp_mda Command failed Exception message: Illegal command: <sp_mda> - Error number: 0 Error level: 0 Result data is null Got RPC event from TDS: dba.sp_mda
This error does not cause any problem and you can ignore it.