RE: Cannot edit a record in Net requirements (ReqTrans). An update conflict occurred due to another user process deleting the record or changing one or more fields in the record

Hi everybody,

in AX 2012 R3 CU13, it just requires to go to Master planning/Periodic/Plans and select "Delete Plane".

Then, normally, go to run the Master Scheduling again and make sure to select "Regeneration" under Principle.

Hope this fixes your issue.