Inventory dimension warehouse must be specified

I created a purchase order for a specific item which Product Type is service, when i try to Receive this item i got the error information like:

Item: L0004

Inventory dimension warehouse must be specified.

update has been canceled.

so where i have to specify the warehouse for the item?

thanks.

Specify on the PO for item. If you are not able to see the Warehouse dimension use Purchase order lines=> Dimensions, mark Warehouse and click OK to get it on PO.