If you encounter a "400 - bad request" error in JIRA, please follow these steps to troubleshoot the issue:
1. Use HTTPS: Ensure that you are accessing your JIRA installation via an HTTPS URL. JIRA does not permit "basic authentication" over non-SSL connections by default for security reasons.
2. Check Custom Fields: Verify that there are no mandatory or required custom fields that might be causing the issue. If you find any, consider changing them to non-required.
3. Consult JIRA Logs: For more detailed information about the error, please refer to JIRA's log files. They can provide specific insights into what might be causing the "400 - bad request" error.
We hope these suggestions help you resolve the issue quickly. If you continue to experience problems, please don't hesitate to reach out for further assistance.
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