FIX Error: Invalid Timestamp (52) – How to Fix
Tag 52 (SendingTime) must be in UTC and follow FIX timestamp format: YYYYMMDD-HH:MM:SS or YYYYMMDD-HH:MM:SS.sss. Invalid formats, timezone issues, or future timestamps cause rejects.
Root Cause
1) Timestamp format incorrect (wrong separator, missing parts), 2) Timezone not UTC, 3) Future timestamp (clock ahead), 4) Past timestamp too old, 5) Non-numeric characters in timestamp.
Broker/Exchange Action
Broker rejects with SessionRejectReason=11 (Incorrect data format) and RefTagID=52. Message is rejected.
Client/Your Action
1) Use UTC timezone, 2) Format as YYYYMMDD-HH:MM:SS or YYYYMMDD-HH:MM:SS.sss, 3) Ensure clock is synchronized (NTP), 4) Validate timestamp before sending, 5) Check for timezone conversion errors.
Example FIX Message
How FIX Doctor Detects This
FIX Doctor validates SendingTime format and flags invalid timestamps. Errors show the expected format.
Related Errors
Analyze Your FIX Logs
Upload or paste your FIX logs to automatically detect this error and get detailed diagnostics.
Analyze FIX Logs