Invoice Tolerance Check at Invoice Header Level

Hi,

We have a requirement to have tolerance check at the header level instead of the line item.Currently in our system we have configured PP and DQ , however those checks are at line item level which is causing lot of our invoices to go in blocked status.

We are looking for a way to have system check tolerance at header level. I have read in some posts that by configuring Vendor specific tolerance keys and assigning them in the vendor master will be an option.

Has anyone came across similar situation ?

Any help is much appreciated.

Thanks

SJ