Error message ME083 "Enter order type"

HI,

Shopping cart is approved and SC status is in " Error in transmission" . In BBP_PD, follow on document PO is showing but we have checked for the same PO in backend system, but is does not exist in backend system.

In RZ20, error message ME083 " Enter order type" is showing.

Anyone know the solution, please suggest.

Thanks,

Suman