Check your PO Release Configuration

Finally, check your PO Release Strategy configuration to make sure that there are no errors.

OMGSCK - Check Release Strategies
(make sure there are no error messages)

Once the Purchase Order is not release, buyers will not be able to print the Purchase Order.

Goods Receipts will be shown with Message no. ME 390 - Purchasing document XXXXXXX not yet released.

In 4.6c, Purchase Order with Release Strategy have a tabs at the end of the Header. This allowed the buyers to check the release status of the Purchase Order.

The person with the release authorization have to use ME28 to release the Purchase Order.