Reframework multiple excel files as input

Fine
In that case if you want to send as one transaction then either you can send as a list of datatables or if the datatable has same column structure then you can merge them together as one datatable and send it as one transaction item

Then to compare and get the matching and u matching values we have got expression to get them being a list of datatable or merged datatables

For more details on datatable

Cheers @mailsmithash