PM Maintenance Plan Vs MM Planned Deliv. Time

Hello Experts,

Just want to know whether there is any relationship with MM when defining the call horizon in Maintenance Plan?

Suppose we have a high lead time (non stock) component which need to incorporate when defining call horizon to create PR well in advance.

we have maintenance this lead time in Planned Deliv. Time ( MRP 2)

I check below discussion as well, but just want more clarity from you experts

Maintenance order _ MRP

Thanks in Advance

Ashok