How to enable approval workflow during AP invoice creation from IDR to payables module?

Summary:

When an invoice is submitted to the designated email address, it is captured by the Invoice WebCenter. Subsequently, we run the Import Payables Invoices program to transfer the data from WebCenter to the Payables module. The client now requires an approval gate prior to this transfer. Specifically, once an invoice is processed by WebCenter, it must undergo an approval workflow; only after it is approved should the data flow into the Payables module.

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