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

Summary:

Client requirement is to enable approval workflow (L1) during invoice creation from IDR to payables module

Content (please ensure you mask any confidential information):

Hi, When we submit invoice to email id then it goes to invoice webcenter. Post this, we run the import payables invoices program to flow the data from webcenter to payables module. Client requirement is before flowing this data to payables module, can we have approvals? So when invoice is submitted, it will go for the approval and once it is approved then data should flow to payables module. How to achieve this?

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