General implementation notes

Backwards Compatibility

The following api changes are considered backwards compatible, and should be handled by you:

• Adding new API endpoints
• Adding new properties to the responses from existing API endpoints
• Reordering properties returned from existing API endpoints
• Adding optional request parameters to existing API endpoints
• Altering the format or length of IDs
• Altering the message attributes returned by validation failures / other errors
• Sending webhooks for new event types

To ensure these changes are handled correctly and do not cause failures on your system we recommend all clients utilise a lenient json parser.

Datetime fields

Please note that where the format for datetime is 2019-03-20T00:00:00+0000, because this parameter is supplied on the URL, it needs to be URL encoded. So the date you send to us would actually look like 2019-03-20T00%3A00%3A00%2B0000. Here is a useful link about encoding & decoding parameters: https://meyerweb.com/eric/tools/dencoder/.

The format that we have documented for an endpoint cannot be changed and other formats for that endpoint are not supported.