Vantage EDI & 855

We currently use the EDI module in Vantage 8.00 for one of our largest
customers. This customer has asked for an additional file in the form
of an 855. Does anyone currently use this 855 in Vantage and if so,
did you use custom programming or have you had some outside source
develop it for your application?

Any help will be appreciated.

Thanks

Dick