@ferb that's what I thought. But seeing different answers online so I wanted to check with the support and other developers if possible or not. Thank you for the help!

@Red Velasco-Oracle I tried Entry, Before Record Load, Before Record Submit, After Record Submit in the trigger on. None of these worked. Please see screenshots. Just wanted to mention, though it's also in the first screenshots I sent, I selected ALL (everything) in the trigger type in the workflow level.

@Red Velasco-Oracle thanks! I hit the button too soon. I just updated the description. Hope someone can help.

@Richard James Uri-Oracle thanks for the response! the inventory number is only required for serialized or lot number. That's why I emphasized that this is an inventory item that uses a bin(only). Anyway, I was able to make it work. I removed the subrecord (for inventory detail) and added enableSourcing :…

Thanks @Richard James Uri-Oracle for the help! I tried that but still get the same error. Please see below the complete error message. Thank you! Here's what I did: var recId = rec.save({ enableSourcing : false, ignoreMandatoryFields: true}); Here's the complete error message:…