kontrollnummer
Kontrollnummer, often translated as control number or check number, is a numeric or alphanumeric identifier that includes a check digit (kontrollsiffra) produced by a calculation from the other digits. Its primary purpose is to detect errors in data entry, transcription, or transmission and to help validate that a number is correctly formed.
The check digit is generated by a specific algorithm and appended to the identifier. When the full
Kontrollnummer are used in a wide range of contexts, including invoice reference numbers, bank account or payment
Limitations include that a kontrollnummer improves error-detection but is not a security feature. It cannot prevent