Looking for best practices on restricting order changes when connected to an MES

We are sending accumulation orders to an MES and privation to restrict definite changes erstwhile accumulation has started running. We're considering having MES nonstop a confirmation connection with zero quantity to acceptable the presumption to PCNF. However, by default, PCNF allows changes to the order, including dates and quantities.

If we usage this method, we would apt person to alteration the configuration of PCNF to restrict these changes.

My question is, is this the champion signifier oregon are determination amended ways to execute this?