Can Supply planning use supplier Lead time data from external source system at ASL Level

Summary:

We intend to use supplier lead time data in supply chain planning process at the ASL level. This lead time information originates from an external source, and we are seeking a method to integrate ASL lead times into our supply chain planning when the source is external.

Also, we seek validation on the following points:

1. Can Supply Plan only consider lead time provided at ASL level

2. Can ASL automatically pick processing lead time from Item Master Level. (If we are only defining Lead Time at Item Master level). If yes, then can we make amendments in the Lead time value at ASL level alone and use it in Supply Plan