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Error

FX-SCH-A-000344: At most one quantity per included product

In short

Error: fails the selected checks.

FX-SCH-A-000344 means an included product on a line in your Factur-X or ZUGFeRD Extended file contains more than one unit quantity (ram:UnitQuantity). Remove extra quantity elements from that included product.

On this page

What it means

Each ram:IncludedReferencedProduct under a line's ram:SpecifiedTradeProduct may contain at most one direct ram:UnitQuantity child. This concerns the included product's quantity, not the main invoice line's billed quantity.

Why it matters

The included product's unit quantity has a maximum of one occurrence in this structure. Repeating it exceeds that limit even if the quantities are identical.

How to fix it

Check which quantity describes the affected included product. Keep no more than one appropriate ram:UnitQuantity inside its ram:IncludedReferencedProduct and remove repetitions. Do not change the main invoice line's billed quantity just to clear this error. Export the file again and recheck it.

Once the file is corrected, check it again for free: Validate a ZUGFeRD invoice

Or fix the invoice in a form and download the corrected file, for 1 credit: Fix a rejected e-invoice Beta

The rule as published

Element 'ram:UnitQuantity' may occur at maximum 1 times.

Where this rule applies

Rule set Version
Factur-X 1.09 EXTENDED 1.0.9-2
ZUGFeRD 2.5 EXTENDED 2.5.2
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether FX-SCH-A-000344 still fails, and which other rules do.

Updated 6 November 2026