Which original system do I choose for the Export Invoice Details process?

The customer hub reference number is the original system reference that the receivables application uses to map the customer on the invoice to the receivables customer identification number.

You must choose the original system that represents the customer hub that you set up using the Manage Trading Community Source Systems task in the Setup and Maintenance work area. This parameter is optional, but if you don't specify the original system, then the original system customer reference number is not populated in the CSV output of the Export Invoice Details process.