Hi Gurus,
I would like to get some advises how to get the future effective of followup materials into MRP, below are the steps I had done
1. Example a main Mat-A is created as ROH type
2. Another material Mat-B is created as ROH type also but this material Mat-B is a followup material for Mat-A (main) (current)
3. Another material Mat-C is also created as ROH type and this material is only take effective to replace Mat-B for future after (1st July)
4. Create a ECN to effective on 1st July 2020 for the material Mat-C in followup material to replace Mat-B
5. Change in material master for material number Mat-A via tcode MM12 with the ECN created
6. Create a forecast demand FG goods level for month of Aug 2020
7. Run MRP on date 12th June 2020
8. MRP result does not plan to buy for Mat-C starts 1st July 2020, but result still proposing to buy for Mat-B, why the MRP behavior does not able to pick the Mat-C as effective after 1st July? (my question)