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Error

FX-SCH-A-001009: The exchange rate date needs a format attribute

In short

Error: fails the selected checks.

FX-SCH-A-001009 means the VAT exchange rate date is missing the format attribute on udt:DateTimeString. Add the attribute with an allowed code that matches how you have written the date.

On this page

What it means

This rule checks whether format exists on udt:DateTimeString under ram:TaxApplicableTradeCurrencyExchange/ram:ConversionRateDateTime. It checks attribute presence only, not whether its value is allowed or whether the date text is valid.

Why it matters

The format attribute identifies how the exchange rate date is represented.

How to fix it

Add format to the affected udt:DateTimeString. For a date written as YYYYMMDD, use 102. Make sure the date text matches the chosen allowed format. If your software omits the attribute, have its export corrected, then export and recheck.

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

Attribute '@format' is required in this context.

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-001009 still fails, and which other rules do.

Updated 6 November 2026