Cause of {"errorMessages":[],"errors":{}} with /rest/api/2/user/assignable/search? string

[PR]

Hi community members,

When I send the below API call,

https://company.url/jira/rest/api/2/user/assignable/search?project={{projectkey}}

I get an error 

{"errorMessages":["No project with the provided key exists"],"errors":{}}

Please advise where the problem source could be. The vendor - which supplies the third party JIRA app integration from the ticketing system - believes it is on the JIRA side and JIRA admins think it could be on the vendor side. 

Additional info:

1.  JIRA hosted on an in-company server though named company.cloud; no atlassian.net domain URL, no vanity URL etc.,

2. Basic Authentication with username/password.

3. Whitelisting of all IPs done.

Your thoughts and ideas are really welcome.

PR

[Timothy]

You can use the HTML renderer or use this renderer (https://marketplace.atlassian.com/plugins/com.jiraeditor.jeditor)