CBB certification authorises work on protected BMW control units and key data. Upload the CBB file exported from your tooling and download the certified file.
Read the CBB for the control unit or key job you are handling.
The file is processed against BMW certification data.
Continue the job with the certified CBB.
It certifies the CBB file so protected control-unit and key procedures can proceed. It is not a replacement for the vehicle-side coding step.
The file is tied to the vehicle it was read from. Use the matching CBB for each job.
You get the error reported by the certification service and are not charged a second time for the same failed request. Contact WhatsApp if it repeats.