[WesleyJohnson]

There are companies that can help with EDI integrations so that both ends can use their "flavor" of EDI and they do the translation. SPS Commerce is one such company I know of. Not affiliated, but we do use them at my employer. I don't work on that team, though, can't offer any thing in terms of ease of use, pricing, etc.

[Brian_K_White]

Vans sound convenient but are really just another potential problem in the chain. I only use them when the other side insists on some truely inconvenient protocol I don't want to have to set up and maintain a special windows vm just to run a special client for one customer-of-a-customer.