lf needing assistance in setting VAT references for intercompany transports on M3, you're in the right place. 

This article will guide you through the process, specifically addressing the requirement to automatically assign VAT codes based on the final client destination.

There is indeed a method to automate the assignment of VAT codes, particularly based on whether the transaction involves an EU or non-EU customer. 

This process is handled through programs CMS016 (TXS020) and in TXS020 within the M3 system.

In the sample below was configured to reflect transactions from the base country Italy to the destination country Belgium.