How to bypass defined Invoice Tolerances for Payables Invoice Validation

Hi

We have a special requirement in Oracle Cloud AP for one of our customers. The invoices are coming from 2 sources:

1. SOURCEVALID - These are normal source invoices, which will go through Standard Invoice Tolerances defined in the system, apply hold (wherever required), and then Validate the invoice.
2. SOURCECUSTOMVALID - These invoices are checked for all the validation criteria like tolerances, invoice header and line amount etc.; however, outside of Oracle system.

Client wants that the SOURCEVALID invoices should go through standard tolerances and be validated by the system (this is achievable through out of box solution); however, invoices from