FIX Protocol Tag 141: ResetSeqNumFlag
Y in a Logon asks both sides to reset their sequence numbers to 1.
- Tag number
- 141
- Data type
- BOOLEAN
- FIX versions
- FIX 4.1 to 5.0 SP2 and FIXT 1.1
- Used in
- 1 message type
Practical notes on ResetSeqNumFlag
ResetSeqNumFlag = Y on a Logon tells the counterparty to reset both sides' sequence numbers to 1.
- The Logon that carries 141=Y has MsgSeqNum 1, and the acceptor answers with its own Logon carrying 141=Y and MsgSeqNum 1.
- It is used for an agreed daily reset, or to recover when the two sides' sequence numbers can no longer be matched.
- Messages in flight at the time of the reset are not recovered, so open orders should be reconciled afterwards.
Common mistakes
- Sending 141=Y on every reconnect during the day, which silently throws away anything not yet delivered.
Changes between FIX versions
- ResetSeqNumFlag exists from FIX 4.1.
Tag 141 in each FIX version
Values and message usage as defined in a specific version.
Data type
BOOLEAN: Y for yes or N for no.
Valid values
2 enumerated values across all FIX versions.
Example
141=N
Illustrative value. In a message, fields are separated by the SOH character (0x01), often shown as | or ^ in logs.
Decode a message with this tagMessage types that use tag 141
- Logon 35=A
Covers every version from FIX 4.0 to 5.0 SP2, including fields reached through components and repeating groups. The version pages above show whether the tag is required in each message.
Field and message data comes from the QuickFIX data dictionaries for FIX 4.0 to 5.0 SP2 and FIXT 1.1, used under the QuickFIX Software License. This product includes software developed by quickfixengine.org (http://www.quickfixengine.org/). Enumerated value names are converted to plain text for reading.