Learn null values are interpreted by External Services.
Required Editions
| Available in: Lightning Experience |
| Available in: Enterprise, Performance, Unlimited, and Developer Editions |
OpenAPI 2.0 doesn’t support the JSON or YAML schema type null. See JSON Schema - 4.2.1 Instance Data Model.
OpenAPI 3.0 has added support to allow values to be nullable. See OpenAPI 3 - Schema Object.
External services allow null values in the request payload or the response payload for both OpenAPI 2.0 and 3.0 specifications regardless of whether the specification forbids or explicitly allows its use.
Tip If null values aren’t allowed for your service integration, validate
the request payload for null values before invoking an external service.