Where can I add a supplier comment or my supplier acknowledgement number?
The fields for supplier comments and acknowlegment number only are editable, if your customer allows this. If this is the case, you will have the possibility to enter these values within the Purchase Order. These fields can only be filled, as long as a Purchase Order is in Status NEW ORDER PUBLISHED, SUPPLIER CHANGE ORDER REQUEST or OPEN.
If you would like to see the Supplier Comment and/or the Supplier Acknowledgement Number in the Purchase Order overview, you can add the corresponding column and save this view as a new profile.