Multiple account assigment in Asset PO

Hi everyone

I have a problem whit the multiple account assigment when i try to make a PO for Asset, whit planned delivery cost because the systems shows messange that cannot use a planned delivery cost with multiple account assigment.

I don´t not why is the message, if i want to make a PO for 40 asset with one planned delivery cost in PO header.

With this message i have to make one item line for one asset and then put the planned delivery cost in PO header.

thanks