How do you navigate Revision changes to a Material within MRP?

Hello,

We are a manufacturing institution utilizing MRP successful S/4 Hana. Currently we person materials being managed utilizing MRP that are undergoing revision changes. We cannot usage the 'discontinued parts' with travel ups due to the fact that determination volition not beryllium a caller worldly number. How tin you navigate a alteration successful revision to a portion presently utilizing MRP wherever the existent banal needs to beryllium depleted?