Online Check-in (Advanced check-in) lets you send your guests' registration data directly to the local authority, so you can stay compliant without handling each submission yourself. This guide explains how to register with the authority, connect your property in Holidu, understand the guest process and booking statuses, and fix common problems. For more help, visit the Holidu Help Center.

1. Register with the responsible authority

Before you activate Online Check-in in Holidu, you must register your accommodation with the local authority for your country or region. This step is mandatory. Once registered, you will receive a username, a password, and in some cases a renter or accommodation code. You will enter these details in your Holidu account.

Find your country or region below and follow the registration link:

• Spain (except Catalonia and the Basque Country): SES.Hospedajes. Register at SES.Hospedajes. Read the guide: How to connect to SES.Hospedajes.
• Catalonia: Mossos d'Esquadra. Register at Mossos d'Esquadra. Read the guide: Connect to Mossos d'Esquadra.
• Basque Country: Ertzaintza. Register at Ertzaintza. Read the guide: Connect to Ertzaintza.
• Portugal: SIBA. Register at SIBA. Read the guide: How to connect to SEF/SIBA.
• Germany: AVS. Read the guide: How to connect your property to AVS.
• Italy: Alloggiati Web. Read the guides: Guest Check-in Feature in Italy and Statistical Reporting in Italy.

2. Connect your property to the authority

Once you have your authority credentials, you can connect your property in the Holidu app. Follow these steps:

1. In the Holidu app, open the left side menu, click "Bookings", and select "Online Check-in".
2. You will see your list of properties. Click "Configure" next to the property you want to connect to the police or authority.
3. The next screen shows your properties and the connection status of each one. Click the property you want to connect.
4. Complete the form with the details of the country where the property is located.
5. Scroll down and click "Activate automatic sending to police". Select the correct authority and enter your username, password, and other required credentials. Do not use your Holidu login here. Use the login credentials you received from your authority.
6. Click "Validate".
7. After the connection is validated, click "Save changes" at the end of the form.
8. If no error message appears, your property is connected to the responsible authority.
9. Close the form and check that the connection shows as active.

To avoid errors, check the following before you save:

• Enter the correct host fiscal code. This is your ID number or, if you are not Spanish, your NIE.
• Enter your full ID or NIE number, including all zeros.
• Use the credentials from your local authority, not your Holidu login.

3. How does Online Check-in work?

After setup, the system works automatically. Guests complete their details, the data is stored, and it is sent to the authority on the day of check-in. Your role is to monitor statuses and step in when something needs attention.

3.1 What the guest experiences

1. After booking, the guest receives an email or message with a link to a secure online check-in form.
2. The guest enters the details of every traveller and scans a passport or ID document. Each person travelling with the guest must complete this step.
3. The data is submitted securely and stored in the system.
4. If the guest does not complete the form, automatic reminders are sent. If the guest still does not respond, you can fill in the data on their behalf (see section 5).

At 11:00 PM on the day of check-in, the guest data is submitted automatically to the relevant authority.

3.2 How to read the status in the Bookings section

Each booking in the Holidu app shows a status for the check-in data. Use the following guide to understand what each status means.

• Started, but missing data: The guest has started the process, but at least one traveller has not finished. The status stays incomplete until every person has completed the form.
• Guest data complete, not yet transferred: All guest data is complete, but the check-in date is in the future, so the data will be sent later.
• Guest data successfully transferred: The data has been sent to the authority.