Net Mass Requirement in Germany Intrastat
To comply with the Intrastat requirements, the items included in the Intrastat report must have net mass information. When viewing generated reports, the list of items missing the net mass value will be displayed in the report window.
To prevent issues related to missing net mass information, you must fill in the Item Weight field on the Sales/Pricing subtab of the item record. This requirement applies to items that have tax item type set to Goods.
You can also update the item weight in bulk using the CSV Import Assistant. Note that you can only import one item type at a time. If the CSV file provided on the Intrastat page notification contains different item types, you'll have to ensure you're importing only one item type (for example, Inventory Item) at one time. Then, you can import again for another item type.