If a QR reference is used, the QR-IBAN must also be used. Payment parts with QR-IBAN are recognized by a special identification of the institution (QR-IID) within the QR-IBAN. A QR-IID exclusively contains values in the range 30000–31999. The QR-IIDs are assigned by SIX Interbank Clearing. The assigned QR-IIDs are published in the bank master. Each legally independent financial institution participating in the procedure is assigned at least one QR-IID.