Schedule lines are not create during contract fulifilment process

Summary:

During my testing of the new framework in contracts (REDWOOD) I have noticed when a Purchase Order is created using the "Create purchasing document button" no linesa are created in the schedule section of the PO and there is no option to add or to modify that tab.

I have already created an SR but the responses have not resolved the issue, which is why I am posting here to see if anyone else has experienced the same behaviour.

I'm adding a screenshot of this case to help with understanding.

It is important to clarify that the business only has procurement contracts, not sales. Therefore, only the minimum necessary to make these pages work has been activated from the sales offering.