Po/Invoice through brokers

Hi,
We raise the P.O against the broker (In general we order him the certain of material over phone, where in he get in touch with rural area parties and they will deliver material directly to my company. But We do not aware who are the parties bring the material. Many cases we found where in 3 to 4 parties are bringing the material by vans. While delivery they are asking us to provide the P.O against their names. We have already raised the PO on the broker. We are unable to follow this scenario in AX. Please advise

Thanks

Hope the following link helps you:

http://dynamicsuser.net/forums/p/51869/268070.aspx#268070

But purchase history reports would be wrong , because GRN and invoice happend againt the wrong vendor .