GET /rest/api/2/user/properties/{propertyKey} Returns Error 404

Summary

As described here, a new REST API call was introduced in JIRA 7.0 that returns the value of the property with a given key from the user identified by the key or by the id. However, it's always returning Error 404.

Expected behaviour

Returns the value of the property with a given key from the user identified by the key or by the id.

Actual behaviour

Error 404 is returned, which means user with given key or id does not exist or if the property with given key is not found.

Example

Call

<instance url>/rest/api/2/user/properties/<propertyKey>?username=<user>

Response

{"errorMessages":["The property <propertyKey> does not exist."],"errors":{}}

Steps to Reproduce

1. Add a key-value pair under properties on <instance url>/secure/admin/user/EditUserProperties.jspa?name=<user>;
2. Try to list the property value of the key for this user with the below REST API call;

   http://<jira-url>/rest/api/2/user/properties/<property key>?userKey=<user>
   

3. Observe the response returned is code 404;

Workaround

At this point, there's no workaround for obtaining users' properties using a REST API call.