Optional Fields for a Sale with Installment Details {#ttp-sis-pymnt-svcs-semi-sale-installment-details-optfields}
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Use one or more of the optional installmentDetails fields to provide additional installment details.

installmentDetails.numberOfInstallments
:
Set the value to the number of installments.

installmentDetails.planType
:
Set the value to `MERCHANT_FUNDED` or `ISSUER_FUNDED`.

installmentDetails.interestPlan
:
Set the value to `true` or `false`.

installmentDetails.governmentPlan
:
Set the value to `true` or `false`.