doTransaction API Call
For the SOAP headers that have to accompany this message, see the section on RPP SOAP headers.
The doTransaction SOAP call is used to action a type of transaction defined by the value in the transaction type parameter against a specified the PayU reference number.
If the setTransaction call sent through a transaction type that requires a follow up (RESERVE → FINALISE) then a doTransaction call needs to be done in order to complete the transaction.
Additionally, a doTransaction call can be done in order to CREDIT a PAYMENT done in the setTransaction.
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