From FIXwiki

FIX Field 219

Tag	Name	Type	Enumerated	First introduced	Deprecated
219	Benchmark	char	x	FIX.4.2

*** DEPRECATED FIELD - See "Deprecated (Phased-out) Features and Supported Approach" ***

For Fixed Income. Identifies the benchmark (e.g. used in conjunction with the Spread field).

Enumerated Values

Notes

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