Vendor Partner Role in RFQ

Hi All,

I have created a vendor as Dealer and main vendor as Goods Supplier.

In Goods Supplier vendor, I have maintained partner roles as Vendor Dealer.

I create RFQ for Vendor Dealer as I get quotation from dealer

Then I create PO for Goods Supplier(main Vendor form which payment will be made) I get error

Reference vendor differs from vendor 3300000006

3300000006 - Is main vedor

3300000010 - Dealer

Kindly suggest whether it is correct?