inventory posting setup doesnot exist error when i post purchase order

Hi guys in dynamic nav i have one problem when i make post to purchase order this error display “The inventory posting setup doesn’t exist identification field and value location code UnRaw Inv.posting group code='Diesel” why this proplem made

and how i solve

thanks

Its a setup issue.

Go to, Financial management–>Setup–>Posting Groups–>Inventory Setup

Add above mentioned Location and Invt. Posting Group Code with proper G/L Accounts…

Please contact Functional Person or senior in office to do this setup…