API release news 09/26

SEPTEMBER 2026

New parameter for write protection in ‘Create and Modify Appointment’

The appointment API calls create and modify now accept a new writeProtection parameter that lets you protect an appointment from being edited (true) or reset it to the default write permissions (false).

Create Appointments

Modify Appointments

Appointment reminders: new recipients and confirmedOnly parameters

The API calls createAppointment and modifyAppointment now support the parameters recipients (“Erinnerung an”) and confirmedOnly (“Nur bestätigte Teilnehmer”), which define who receives the appointment reminder — both only take effect if a valid value for erinnerung is set as well.

Create Appointments

Modify Appointments

API release news 08/26

AUGUST 2026

1. New call: Get Statistics Widgets

Reads the configuration of the statistics widgets from the statistics tab for properties.

Get Statistics Widgets

2. New call: Get Estate language versions

This API call allows you to retrieve all existing language versions of a real estate property from onOffice enterprise.

Get Estate language versions

3. Create Appointments: new parameter useSpecificErrorCodes

Controls the output of error codes when validations fail.

Create Appointments

API release news 06/26

JUNE 2026

1.) New parameter normalizedPhoneNumbers in “Read addresses”

The API call for retrieving addresses now also returns standardised telephone numbers. This simplifies integration with telephony providers and significantly speeds up the process of finding the correct address for a phone number.

Read Addresses

2.) New parameters in “Do Send Appointment confirmation”

The “Do send appointment confirmation” API call has been extended with the parameters “emailidentity”, “displayName”, and “useAppointmentCreatorsSignature”.

Do Send Appointment confirmation

API release news 05/26

MAY 2026

1.) File validation for ‘Do File Upload’

Uploading files via the API is restricted to the same file types as when uploading via the enterprise GUI. If a file of an unsupported type is uploaded, the response will contain an error.

Do File upload