What is best practice for FedEx/UPS integrating to Epicor externally?


I was wondering if there was an Epicor approved best practice on automating getting data from the external FexEx/UPS program into Epicor’s database?
Right now, Manifest handles the bulk of our shipping but there are specialty items that Manifest doesn’t seem to handle correctly. Shipping is using the FedEx program to ship these and then putting the data back in Epicor manually.

I was told by FedEx that they could write directly to the database if needed but wanted to research first.

Anybody deal with this before? All comments are most welcome.

Thank you,