Problema de Accion/automatizacion

Hello, how are you doing? I have an app El Glide which is in charge of managing my company, which manages orders that my customers make to me (these orders could be packages since they contain parts) to place these orders I must check in my stock if I have them available and if not I must manufacture them, this is where my problem begins. In the event that you already have certain parts to manufacture for a previously requested order and today you enter another order with some
If I have a part that was previously placed in another order and is actively manufactured, then it should notify me and copy that part into another field called sub-assembly which is related to the original order