Logic behind requirement type change in sale order change mode.
I have came across a confusing behavior of system which I'd like to bring in your notice and get some input. I am not able to understand why system is doing this.
This is MTO scenario and we create sale order using ZMM requirement type. In Go Live users uploaded some wrong master data due to which system determined wrong requirement type in sale order. When I analysed, I came to know that this is because of strategy group in MRP3 view. I deleted strategy group from MMD and tried to change requirement type in sale order. Here I found that system is allowing to change requirement type for some items. Others were in grey mode.
I replicated the scenario in DEV and tried to understand why and when we are allowed to change it in VA02 but I am not able to understand the logic. Could anyone of you make me understand the logic that why and when system allow us to change requirement type in sale order change mode VA02 in MTO?
For reference check below screen where master data and all settings are same for both materials but system is allowing to change it only for one material.