What's New


Use this page to find out about the updates we've made to our APIs and integrations. Note that:

  • The Release Notes are up-to-date at the time of the release. Further improvements or corrections to our API documentation normally occur in the guides and references only.
  • For some APIs listed on this page, we only support existing integrations. This support will continue until further notice; however, new integrations are not allowed. These are clearly marked.

If you are already integrated with a Fourth API and would like to be kept abreast of changes via email, please fill in this form.

Breaking change notification

20th August 2023

As part of its ongoing commitment to the security of its customer’s information, Fourth will be updating its platform to require all connections to use TLS 1.2 or higher from 9 January 2024. Older versions of TLS will be retired.

TLS is the encryption method used to secure communications over HTTPS. This will have no impact on SFTP connections.


POS Gateway

Connected Apps & Fourth Engage

Workforce Management

UK HR & Payroll

Labor Productivity

Time & Attendance

Fourth Inventory for Hotels


  • Adaco Web API
    This includes the Product & Catalogue resources (previously called the Product API and Catalog API), and the Exchange Rate, Inventory, Requisitions, and Events resources.
  • Sales Item API
  • Vendor API
  • Budget API
  • Sales API
    Use of this API is restricted to existing integrations only.

Fourth Inventory for Restaurants

Recipe & Menu Engineering

Menu Cycles


New integrations are not supported for the following APIs. However, existing integrations remain supported until further notice.

These APIs have also been known as the Fourth Purchasing & Inventory Web Service and the R9 APIs.

FnB Live

    These APIs have also been known as the Fourth API, FnB Admin API and FnB Shop API.