# JSONFormat

The JSON format to use for an ACI action response when the action has ResponseFormat set to `json`. You can use one of the following options:

- `json`. The most recent JSON format. In version 12.4, this value is equivalent to `json/1`. In future versions, this value might be updated to use a new type of JSON format.
- `json/0`. An older JSON format that returns single-element lists as objects, rather than arrays. This format was the default JSON format before Coordinator version 12.0.
- `json/1`. A newer JSON format that returns single-element lists as arrays, for consistency with multiple-element lists.
- `simplejson`. This format is similar to the `json/1` format, but it does not use `$` nodes to represent XML nodes unless the equivalent XML node contains attributes. This response format also does not use `autn:` prefixes in node names.

Type: | String
Default: | json
Required: | No
Configuration Section: | Server
Example: | `JSONFormat=simplejson`
See Also: |

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