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WORK IN PROGRESS - Some links may not work properly - Thank you for your comprehension.

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How get access to Mercurius portal ?

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In this case you should have immediate access to the mercurius portal, as representative of the company. This means you can immediately (1°) view all invoices sent to the government and (2°) send an invoice to the government ( {+}https://digital.belgium.be/e-invoicing/PeppolSearch.html+ ) using the web form available in the portal.
if your company has not yet sent any invoice, the list of invoices that is displayed, is empty.

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if, after logging in to the mercurius portal, you get the message "Sorry, you have no authorization for a business. Therefore you can not use this site. For more information, please consult CSAM" : this means that your function is not registered in the CBE. You can check this by surfing on the CBE Public search interface ( {+}http://kbopub.economie.fgov.be/kbopub/zoeknummerform.html?lang=en+ ):

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In that case, go (back) to the "home" section of the CBE Public search interface. At the right side of the screen,it displays a text box containing instructions to follow to regularise your enterprise data. You can also contact the CBE-cell for more specific support. Email and telephone are available at {+}http://kbopub.economie.fgov.be/kbopub/glossarium.html+
 

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1. Identify the Chief Access Manager in your company - if any, using {+}https://www.csam.be/app016/autocel/frontend/actions/Entrer.do?langue=fr&source=1+
   1. We assume that you don't know if your company has a chief access manager appointed, and that you don't know who to ask in your company. (this is not an exceptional situation)
   2. Go to the link above
   3. Fill in your enterprise number and click next.. The site displays your company name and address.
   4. Click next again.
      1. The application informs you that your company is already registered in the system, and a Chief Access Manager is already appointed. In that case you have 2 options to identify who he/she is:
         1. Ask your company legal representative(s). He/she should know, because he/she is the only one able to appoint the companies Chief Access Manager
         2. Call the CSAM helpdesk and ask them: {+}https://www.csam.be/en/contact.html+
         3. Once you know who is your Chief Access Manager, proceed to step 3
      2. If, instead, the application prompts you to fill in data for the person that will take the Chief Access Manager role, then go to step 2
2. Get a Chief Access Manager appointed
   1. Only a legal representative can appoint the companies Chief Access Manager
   2. He/she must go on the page {+}https://www.csam.be/en/management-access-managers.html+ and follow the procedure to appoint a Chief Access Manager - preferably, the standard procedure which is fully automated.
   3. In case of a problem with this step, he/she can get support at the CSAM helpdesk: {+}https://www.csam.be/en/contact.html+

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1. Get the role "billing officer" assigned - using {+}https://iamapps.belgium.be/rma+
   1. Preamble: the procedure that follows guides the companies Chief Access Manager and the (candidate) billing officer to a 3-steps workflow, that (1°) is common for all eGOV roles - so it is repeatable and manageable for the Access Manager - , and (2°)  guarantees that all candidates are truly identified, so roles cannot be appointed to the wrong person or usurped. Notice also that Access Manager can easily  revoke appointed roles whenever needed.
   2. Workflow:
      1. The Access Manager creates an invitation for the role "billing officer", and sends the invitation to the candidate
         1. Go to {+}https://iamapps.belgium.be/rma+. click "log in"
         2. Go to tab "manage invitations"

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1. 1. 1. 1. Click "create a new invitation". follow the 6-step wizard, selecting the role "billing officer".
         2. Once the invitation is created, send it by mail (email address filled in) or copy the url that corresponds to the invitation and send it by manual email to the candidate
      2. Upon reception of the email, the candidate accepts the role by following the link, logging in (EID), and confirming that he will get the role.
      3. The Access Manager will receive an email from the system containing a link. he must follow and approve the appointment of the role to the candidate. Outstanding tasks are also seen on the "outstanding tasks" at {+}https://iamapps.belgium.be/rma+ . The billing officer has immediate access to the mercurius portal . The role can be appointed to as many persons as needed, reusing the same invitation. A complete manual for access managers is available on the welcome page of  My eGOV Roles Management at {+}https://iamapps.belgium.be/rma+

in case of trouble using my eGOV Roles management, please send a support request .

I need to represent several companies. is it possible? [Click to expand]
Yes:

• As Legal Representative this is automatic. You will see immediately all invoices of all companies you legally represent provided your enterprise data in the CBE are correct  and be able to send invoices for all of them.
• As Billing Officer each company you represent must appoint you the role billing officer, following the procedure documented at I am not a legal representative of the company, but I am in charge of outgoing invoices to the government for the company. Therefore I need to access the site.

Selection on company is possible after login in Mercurius.

I am representing a non-Belgian company. How do i get access? [Click to expand]
Access to Mercurius is based on enterprise data available through Crossroads Bank for Enterprises (CBE) in Belgium ( {+}http://kbopub.economie.fgov.be/kbopub/zoeknummerform.html?lang=en+). Keeping this in mind, enterprises not registered in CBE cannot have access to the Mercuriusportal. This is however only in a small numbers of cases a problem, since most of the suppliers to the government have regular activities in Belgium and therefore should be registered in CBE.
On top of this, the electronic identity card (EID) is at this moment the only possible identification accepted. Only owners of such a card can use the Mercuriusportal. More specifically, this concerns only Belgian citizens and non-Belgian residents in Belgium.
Remark: to be able to send invoices to public entities, access to the Mercuriusportal is not necessary. Public entities adhere the European interoperability framework PEPPOL. This framework consists of a transnational transport infrastructure. More than 200 Access Points are available all over Europe. ICT companies develop global solutions based on this interoperability framework and transport infrastructure. A list of available Access points can be found at https://peppol.eu/who-is-who/peppol-certified-aps/. More information on PEPPOL in Belgium can be found at Belgian PEPPOL Authority.