Where can I find my PROBAS organisation number? Max September 07, 2022 09:35 Updated Follow Your organisation has received a unique number in PROBAS. You will need this number to register for eHerkenning PROBAS. The organisation number can be found in the PROBAS ePortal. Related articles How do I approve the registration of additional users for eHerkenning PROBAS? How do I designate an authorised representative? How do I register for eHerkenning PROBAS? Can I retry my application to verify that I am the Authorised Representative? How to contact us