Some companies requires enterprise based purchase agreements, both on price level and on quantity level.

In D365FO the quantity limit functionality is only active on local company level.

I suggest to extend the functionality to enterprise level including these functions:

The agreement is made on product level. Prices are defined for each local vendor per company.

Lead times for each local vendor can be set on the agreement, and will be used in the MRP, while the agreement is active.   

We  can see that for French governmental rules we are able to track a global agreements, but this seems only to be a reference.