Overview

This specifies the identity of structure represents the unique key fields associated with identifying an Invoice. Invoices can be identified by InvoiceNumber or InvoiceUid. When specifying an PwsInvoiceRef as an input to a web service, you may specify one or both the InvoiceNumber and InvoiceUid. However, if you do specify both they must both refer to the same Client or the Client Reference will not be considered valid. When a PwsClientRef is returned in the response to a web service, both the ClientUid and ClientNumber will be populated, and guaranteed to refer to a single Client.

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