This operation will create an instalment plan
Basic authentication is used to authenticate towards Enfuce API. It is described in more detail in RFC 7617.
The audit user to log the request
The source type for the instalment.
TRANSACTION "TRANSACTION"
Transaction that will be converted into instalments
"8767653"
The paymentPlan.type field should be BUY_NOW_PAY_LATER.
Optional text describing the instalment request
255"Instalment for product #4567"