How to exclude PO from MRP calculation in S4 Hana Public Cloud

Hello SAP Experts,
I americium presently moving connected manual recorder constituent readying for earthy materials. I request to guarantee that acquisition orders are excluded from MRP calculations and that MRP lone takes banal into consideration. Can you delight supply guidance connected the indispensable steps and parameters that request to beryllium acceptable successful the worldly maestro to execute this? Additionally, I would admit a solution for On-premise also, arsenic I tin aboriginal subordinate it to the cloud.