JQL Keywords
Custom field name duplicates
If you have custom fields with the same name as Jira default fields, Enhanced Search will prioritise Jira’s default fields during searches. We recommend renaming your custom fields before using them in search queries, as Jira’s default fields will be used instead of custom fields with the same name.
When searching in Advanced mode, the JQL Keywords described in this section can be used in the Issue Search screen. To help your understanding of JQL keywords, we've outlined each one with an explanation and example.
JQL keywords will not work until an initial metadata synchronization has been performed, as described in JQL Keyword Synchronization.