Cannot Complete Work Order Due to Subinventory Code Error

Summary:

I am trying to execute a Work Order using the Review Dispatch List page in Fusion and when I reach the Summary page to Save and Close the WO, I am met with an error that reads "The value provided for the attribute SUBINVENTORY_CODE is invalid."

This error appears despite the fact that I do have a chosen destination subinventory for my primary output as well as a locator selected (see screenshot below for more info about my WO).

Please could you assist me by helping my understand why this is occurring and how I can fix it/prevent this from happening in future.