Intelligent Document Recognition - IDR - Match to a single Purchase Order with multiple lines

Summary

IDR - Logic for Matching single purchase order with multiple lines

Content

When an invoice from a supplier has multiple lines (for a single purchase order) is there documentation to determine what logic IDR uses to decide what line it is matched to?   

For example:   Does it compare line descriptions from the PO to the Invoice?  Does it look at price?   Does it match to the first line always?

Thanks !

Version

20D