Hello,
You can do that with planning Horizon = RLT
In MD02 use processing key NETPL ;- Net change planning in the planning horizon
And maintain the planning horizon in OPPQ or MRP group OPPR
For example if we set planning horizon as 30 days = RLT
Run The MRP and check the results MRP will plan the sales order within planning Horizon
Best Regards,
R.Brahmankar