Shopify - Line Items must be stocked at the same location

In the event that you encounter the error message "Failed. Line Items: must be stocked at the same location," it means that you must first indicate the location from which to fulfill the items then make sure you have that location selected that has the items in stock to ship them from. Additionally the error you may encounter may be Location is deactivated. Correcting this with the following guide below and correctly selecting the appropriate location will resolve your error. Below is another article regarding location mapping in shopify.