User Guide

MarkInvoiceAsUnpaid API Operation
MarkInvoiceAsUnpaidResponse Message
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106 May 2012 Invoicing Service API Guide
MarkInvoiceAsUnpaidRequest Fields
MarkInvoiceAsUnpaidResponse Message
The MarkInvoiceAsUnpaidResponse message marks an invoice as unpaid.
ResponseEnvelope Fields
Field Description
invoiceID xs:string
(Required) ID of the invoice to mark as unpaid.
requestEnvelope common:requestEnvelope
(Required) Information common to each API operation, such as the language
in which an error message is returned.
Field Description
ack common:AckCode
Acknowledgement code. It is one of the following values:
 Success – The operation completed successfully.
 Failure – The operation failed.
 SuccessWithWarning – The operation completed successfully;
however, there is a warning message.
 FailureWithWarning – The operation failed with a warning message.
build xs:string
Build number. It is used only by PayPal Merchant Technical Support.
correlationId xs:string
Correlation identifier. It is a 13-character, alphanumeric string (for example,
db87c705a910e) that is used only by PayPal Merchant Technical Support.
NOTE: You must log and store this data for every response you receive.
PayPal Technical Support uses the information to assist with reported
issues.