PaperLegFill

Paper fill input for a single execution-plan leg on the Control Hub.

Field	Type	Required	Nullable	Default	Description
ExecPlanLegId	str	Yes	No		Execution-plan leg id returned by prepare APIs.
Price	Decimal	Yes	No		Fill price for the leg.
Commission	Decimal	No	Yes		Optional commission to apply for the leg fill (when supported). null = server default.
Qty	Decimal	No	Yes		Optional signed execution quantity. null = fill the execution plan quantity. Positive values buy; negative values sell.