https://www.epo.org/en/node/what-are-next-steps-after-registration

What are the next steps after registration?

After registration, you will receive an email confirming that your registration on the EPO procurement portal was successful. You can then log in with your credentials and enter additional data such as your bank details and attach supporting documents.

To enable us to verify the correctness of the data, please attach supporting documents for your commercial register ID (e.g. extract from the commercial register), VAT ID (e.g. document from the tax authorities) and bank account details (e.g. letter from the bank) and, if applicable, an ISO certificate.

A procurement officer from the EPO will review your registration form. Once a business relationship exists (contract or purchase order) your company will be fully onboarded on the portal.