Single PO Multiple Vendor , Total Tax going in GR/IR

Hello Gurus,

I am configuring a scenario where there will be two different vendors in a single PO.

For material we have diff. vendor and for freight we have another one.

What problem i am facing is the tax calculated on Freight is also getting added in the GR/IR account , Hence when I am doing the MIRO for both the vendors freight vendor is not getting any tax and main vendor is getting the tax of material and frieght both