I’ve seen this error message crop up a few times. It occurs when you try to receive a Purchase Order in Receiving Transactions Entry and you are presented with the message below even though “Purchase Order Approvals” hasn’t been activated in the “Purchase Order Enhancement” module.

Learn how to deal with this error at thedynamicsexplorer.com/2019/06/25/dynamics-gp-you-cannot-receive-against-unauthorized-purchase-orders/