SettlDate <64> field – FIX 4.4 – FIX Dictionary
Specific date of trade settlement (SettlementDate) in YYYYMMDD format.
If present, this field overrides SettlType <63>. This field is required if the value of SettlType <63> is '6' (Future) or '8' (Sellers Option). This field must be omitted if the value of SettlType <63> is '7' (When and If Issued)
(expressed in local time at place of settlement)
(Prior to FIX 4.4 this field was named "FutSettDate")