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Error

FX-SCH-A-000338: At most one calculated amount per line tax entry

In short

Error: fails the selected checks.

FX-SCH-A-000338 means a tax entry in an invoice line's settlement in your Factur-X or ZUGFeRD Extended file contains more than one calculated amount (ram:CalculatedAmount). Remove duplicates within that tax entry.

On this page

What it means

Each ram:ApplicableTradeTax inside a line's ram:SpecifiedLineTradeSettlement may contain at most one direct ram:CalculatedAmount child. This is a limit per tax entry, not across all tax entries on the line. The test does not check the amount's calculation.

Why it matters

The calculated amount belongs to its individual tax entry. More than one amount element within that entry exceeds the limit, even when the amounts are identical.

How to fix it

Check the calculated amount for the affected line tax entry. Keep no more than one appropriate ram:CalculatedAmount inside that ram:ApplicableTradeTax. Do not remove other tax entries merely to leave one amount for the whole line. 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:CalculatedAmount' 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-000338 still fails, and which other rules do.

Updated 6 November 2026