Specific date of trade settlement (SettlementDate) in YYYYMMDD format.

If present, this field overrides SettlmntTyp (63). This field is required if the value of SettlmntTyp (63) is '6' (Future) or '8' (Sellers Option). This field must be omitted if the value of SettlmntTyp (63) is '7' (When and If Issued)

(expressed in local time at place of settlement)