Unable to change tracking dimensions for some Production Bom AX 2012

Hi, for some BoMs that I am able to change “tracking dimensions” but for others AX doesn’t let me. I am not exactly sure why but I could only speculate - perhaps it may not work for multi-level BoM, or if there are open Production or SO orders, or has existing stock! Appreciate your feedback

If there is no stock transaction (required on a production line, on a production order, on a transfer order, on a purchase order, etc) then you can change it. Once there is a transaction you cannot.