FIX Tag 373 – SessionRejectReason
SessionRejectReason is a numeric code in Reject messages (35=3) explaining why a session-level message was rejected. Common codes: 5=Invalid tag number, 6=Required tag missing, 10=Value is incorrect, 11=Incorrect data format.
Correct Usage
SessionRejectReason is set by the broker/exchange. It provides the reason code for the rejection. Use this code along with RefTagID to understand and fix the issue. Refer to FIX specification for complete list of reject reason codes.
Common Issues
1) SessionRejectReason=6 means required tag missing (check RefTagID), 2) SessionRejectReason=10 means invalid value (check RefTagID), 3) SessionRejectReason=11 means format error, 4) SessionRejectReason=5 means invalid tag number, 5) Understanding reject codes speeds up troubleshooting.
Example FIX Message
Related Tags
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