FIX Protocol Tag 279: MDUpdateAction

Action for an entry in an incremental refresh: new, change or delete.

Tag number: 279
Data type: CHAR
FIX versions: FIX 4.2 to 5.0 SP2
Used in: 1 message type

Tag 279 in each FIX version

Values and message usage as defined in a specific version.

Data type

CHAR: A single character.

Valid values

6 enumerated values across all FIX versions.

Value	Meaning	FIX versions
0	New	All
1	Change	All
2	Delete	All
3	Delete thru	5.0, 5.0 SP1, 5.0 SP2
4	Delete from	5.0, 5.0 SP1, 5.0 SP2
5	Overlay	5.0 SP1, 5.0 SP2

Example

279=0

Illustrative value. In a message, fields are separated by the SOH character (0x01), often shown as | or ^ in logs.

Decode a message with this tag

Message types that use tag 279

Market Data Incremental Refresh 35=X

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.