Community resources
Community resources
Community resources
Intermittent HTTP 400 Bad Request from Jira REST API (/rest/api/3/issue/)
Hi everyone,
I'm currently working on an integration with the Jira REST API and encountered intermittent 400 BAD_REQUEST responses when trying to create issues using the following endpoint:
https://***.atlassian.net/rest/api/3/issue/
The response returned is an HTML error page: HTTP Status 400 – Bad Request
<!doctype html><html lang="en"><head><title>HTTP Status 400 – Bad Request</title><style type="text/css">body {font-family:Tahoma,Arial,sans-serif;} h1, h2, h3, b {color:white;background-color:#525D76;} h1 {font-size:22px;} h2 {font-size:16px;} h3 {font-size:14px;} p {font-size:12px;} a {color:black;} .line {height:1px;background-color:#525D76;border:none;}</style></head><body><h1>HTTP Status 400 – Bad Request</h1></body></html>
This issue is intermittent: the integration works normally for some time, then starts returning `400 Bad Request` responses, and later recovers automatically without any configuration or code changes.
Some additional context:
- The call is performed from an external integration system.
- Jira logs show that the request reaches Jira and Jira immediately returns HTTP 400.
- No additional internal Jira traces/errors are generated after that.
- The request size is around 19 KB.
Has anyone experienced a similar intermittent issue when calling Jira APIs from external systems?
Any insights, recommendations, or debugging suggestions would be greatly appreciated.
Thanks in advance.