API version 2.3 deprecation
On July 8th, 2023, we will be deprecating Neon CRM API v2.3. After this date, requests to API v2 that include the header NEON-API-VERSION: 2.3 will receive a HTTP 410 error, indicating that the API version is no longer valid.
Learn more about versioning in API v2.
If your application currently specifies version 2.3 in your API request headers, we recommend updating to the most recent version of the API v2. API requests that do not include the NEON-API-VERSION header will default to use the most recent version.
This change will not affect Neon CRM API v1, and this legacy API is still currently supported.