Adaptive Payment Refund functionality Issue The refund's Error receiver test@test.com wasn't part of the payment

[Abhishekamol]

Please Help Me in this issue .
I am sending request Like This In adaptive delayed chained payment for refund functionality

requestEnvelope.errorLanguage=en_US&requestEnvelope.detailLevel=ReturnAll&payKey=AP-0W669522L6576684X&CURRENCYCODE=GBP&TRANSACTIONID=4DA43013G4561763W&requestEnvelope.errorLanguage=en_US¤cyCode=GBP&receiverList.receiver(0).email=testbuyer999@gmail.com&receiverList.receiver(0).accountId=AGH52GTL74KZY&receiverList.receiver(0).amount=19.02&receiverList.receiver(0).primary=false&REFUNDTYPE=Partial

And I am getting the Error Like

Array ( [responseEnvelope.timestamp] => 2017-03-15T06:58:40.702-07:00 [responseEnvelope.ack] => Failure [responseEnvelope.correlationId] => f264d1c531eef [responseEnvelope.build] => 30801389 [error(0).errorId] => 589037 [error(0).domain] => PLATFORM [error(0).subdomain] => Application [error(0).severity] => Error [error(0).category] => Application [error(0).message] => The refund's receiver testbuyer999@gmail.com wasn't part of the payment request [error(0).parameter(0)] => testbuyer999@gmail.com )