[nocubicles]

I would get an open source ERP platform that you can extend yourself - for example Microsoft Dynamics Business Central or Odoo and start building on top of that platform. These platforms already have edi modules and all other basic functions such as sales and purchase module, finance etc. That will save you tens of thousands of development hours and you can start building your custom processes straight away.

[Arjuna144]

I recommend using frappe framework, as the ones mentioned are not as "open" as frappe. Odoo was quite a disappointment, because everything you really need is locked behind a paywall...

https://frappeframework.com/