There are various channel specific settings depending on the channels you are using in StoreAutomator.
This switch is located on the Channel>Channel Settings>Amazon Settings tab.
When enabled, SA will send the item dimensions fields instead of package dimension fields for the items that do not have any data in the package dimensions fields.
This is useful if you didn’t enter any data inside the related package dimensions fields and you don’t want to enter all products the dimension data. You can simply enable this switch to prevent any errors occurring. Dimensions are important fields that define your product details on Amazon.
IMPORTANT NOTE: Settings will be applied to ALL products in the selected Amazon channel.