SIBA Error 101: How to Fix It (Step-by-Step Guide for Portugal Hosts)

CheckinSimple Team ยท

You try to report your guests to AIMA and SIBA answers with a cryptic error 101. You are not alone: this is one of the most common problems for Alojamento Local hosts in Portugal, and it can almost always be fixed in a few minutes.

What does error 101 mean?

Error 101 essentially means that SIBA cannot match your property. The combination of tax number (NIF), establishment number (Estabelecimento) and access key (Chave de Acesso) does not match what the authority has on file.

The three most common causes

  • Wrong establishment number: many hosts enter their AL licence number. SIBA expects its own establishment number, which you received when the web service was activated.
  • Access key not activated: the Chave de Acesso must be explicitly enabled for the automated web service. A login for the web portal is not enough.
  • NIF does not match the property: the tax number must be exactly the one under which the property is registered with SIBA, not the one of a manager or partner.

Step-by-step fix

  1. Find the email you received when registering with SIBA. It contains your establishment number and access key.

  2. Compare the NIF with the tax number under which the property is registered.

  3. If you never activated the web service, send a short email to siba@ssi.gov.pt asking to activate the web service for your property. Include NIF, property name and address.

  4. Enter the corrected data in your software and resend the pending reports.

What to do while the deadline is running

Guests must be reported within three working days of arrival. If the automated route is not working yet, generate a DAT file and upload it manually in the SIBA portal. That keeps you compliant while the setup is finished.

Conclusion

Error 101 is rarely a technical disaster; it is almost always a matching problem. CheckinSimple shows a dedicated help screen for this error with the right fields and a ready-made email template for the authority, and it can generate the DAT file as an emergency fallback. Try it free for two months, no credit card required.