The mobile application displays a synchronization error message. What should I do?

Why do synchronization errors occur in applications?

Synchronization errors can result from:
a) mobile applications could be operating offline.
b) several users could be logged into an account.
c) your account may be integrated with an external system whose reservations have priority status (e.g. integration with Booking.com).
d) Using the Android 4.4 (KitKat) or earlier, which is no longer supported (more).

Why are error messages displayed?
Error messages notify users of existing problems and how they can be resolved.

What are the most common synchronization problems?

ERROR NO. 2
An error message appears when the access information to your account (username and password) has been changed. In order to resolve this problem, you should log in to your account again.

ERROR NO. 5
An error message appears when a reservation is made for a date that has already been reserved on a mobile application operating offline.

ERROR NO. 9
An error message appears when a reservation is added for a room that had been previously deleted (e.g. on the Web application).

How can I verify if an error has been resolved?

1. Use your Android device version 5.0 or higher.

2. Clear the list of errors.

3. Complete the synchronization again.

After the synchronization has been completed, the list of errors should be empty. If an error message is displayed again, this means that the error has not been resolved.