UnderlyingPaymentStreamFormulaMathGrp is a repeating subcomponent within the UnderlyingPaymentStreamFormula component. It is used to specify the set of formulas, sub-formulas and descriptions from which the rate is derived.
| 43111 | UnderlyingPaymentStreamFormulaLength | FrmlaLen | | Required if NoUnderlyingPaymentStreamFormulas(42981) > 0 | Added EP259
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| 42982 | UnderlyingPaymentStreamFormula | Frmla | | Required if NoUnderlyingPaymentStreamFormulas(42981) > 0. | Added EP208
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| 42983 | UnderlyingPaymentStreamFormulaDesc | Desc | | | Added EP208
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