The UnderlyingProvisionCashSettlPaymentFixedDateGrp is a repeating component within the UnderlyingProvisionCashSettlPaymentDates component used to report fixed cash settlement payment dates defined in the provision.
  | 42100 | UnderlyingProvisionCashSettlPaymentDate | Dt |   | Required if NoUnderlyingProvisionCashSettlPaymentDates (42099) > 0. | Added EP187
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  | 42101 | UnderlyingProvisionCashSettlPaymentDateType | Typ |   | When specified it applies not only to the current date but to all subsequent dates in the group until overridden with a new type. | Added EP187
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