OCR Invoice Implications w.r.t Purchase Orders

In our current project, as a part of phase 1, Finance has already been implemneted. Currently, we are implementing supply chain and procurement.

We'd like to know the implications of using OCR invoices w.r.t. procurement-purchase orders and whether any changes have to be done on the procurement side so that the purchase orders can be matched with the the OCR invoices

Thanks,

Srikant Dasagi