B2B Scenario in PI 7.3

Hi Experts,

New to B2B integration in PI 7.3. Can anyone send a full end to end cycle/blog  of B2B integration used in PI 7.3?

A blog ,involving all the configurations required in PI 7.3 to do a B2B integration with an EDI from where multiple messages are coming, will be of great help.

Thanks

Ayan Chaudhuri