After a PMR is completed and the production process in ERP is finished, it is possible that there is still a quantity of the product on the PSA, and that no other PMR needs the product. In this case, the product should be brought back to the warehouse so that it does not occupy space on the PSA. You create warehouse tasks for this movement with the transaction, Clear Production Supply Area.
For products staged using the single-order staging method, you must first release the reference document to clear the reference in the stock (with the same transaction). If you do not release the reference document, the stock can never be used for another PMR.
There are no special functions to clear a PSA when using the delivery-based production staging. You create ad-hoc warehouse tasks after the information from production that the excess components are not required anymore (the same way you would create warehouse tasks if there are additional quantities needed).