Customer specific ASN creation

Summary:

Hello Wizards, have you implemented customer specific ASN, real time data exchange (EDI) with 3PLs, Freight Forwarders and Suppliers.

Content (required):

I am looking for solution in Inventory Management Cloud for the following requirements. Please let me know if you have implemented solutions for the following:

1. Alerts from 3PLs/suppliers when they have done the ship confirm on behalf of your customer.
2. My customers customer require their own specific ASN format. Can we done this in BI Publisher and send it from Inventory Management.
3. If ASN needs to be updated, how do we handle that without cancelling the ASN and creating a new one.