I'm creating a stock control system. I've got almost everything in place (with the help of google search) but one last part that I'm trying to implement is eluding me. My 'Stock Out' tab, I would like to be able to reject the input of new stock out if the corresponding part stock (in either the connectors or electronics stock tab) is 0 (seeing as I can't have negative stock). No matter what I try, I can't seem to get it to work. If someone could give me some pointers, that would be amazing! It's been nearly a week trying to solve this and I'm losing the will lol.
I'm very new to using sheets for such systems so please forgive my ignorance if this is fairly easy to do! Here's the link to the sheet I'm working on. This is a copy with less part information but the formulas are the same. https://docs.google.com/spreadsheets/d/1MoZpcOFhACmKy_FsS9T43JEryAFswgheO5a5qtWnRcI/edit?usp=sharing
