Specification identifier is not an XRechnung 3.0 identifier (BR-DE-21)

Meaning

The specification identifier (BT-24) should be one of the XRechnung 3.0 identifiers (standard, extension or CVD). With any other identifier the KoSIT validator finds no matching rules and rejects the invoice.

Original text of the rule

Das Element "Specification identifier" (BT-24) soll syntaktisch der Kennung des Standards XRechnung entsprechen.

Possible causes

How to fix it

Example from the test bench: Outdated specification identifier “xrechnung_2.3” (BR-DE-21)

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