FIX TAG 123

GapFillFlag

BooleanAdded FIX.4.0

Definition

Indicates that the Sequence Reset message is replacing administrative or application messages which will not be resent.

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FIX 5.0 SP2 FIX Latest · EP309

No differences in name, type, definition text, deprecation, or enumerated values.

Value	Meaning
`N`	Sequence Reset, Ignore Msg Seq Num (N/A For FIXML - Not Used)
`Y`	Gap Fill Message, Msg Seq Num Field Valid

About the Boolean data type

char field containing one of two values:

'Y' = True/Yes

'N' = False/No

Used in messages 1

Includes nested components and repeating groups. Open a location to see its surrounding requirements.