Best practice for Doc I/O invoice validation

Summary:

I am after advice for invoice validation after documents have been scanned through via Doc I/O (invoice image source)

Content (please ensure you mask any confidential information):

Previously when we scanned invoices, we ran the ESS job for Validate Payables Invoices to validate all invoices that had been scanned throughout the day. But lines did not pick up well (in IDR) and therefore most invoices went on hold. When trying to edit them, especially taxes, it was easier to delete it and enter it in manually as the flexibility to edit some fields changes after validation. So we disabled this service and stopped reading line level in IDR.