Save button throw the following error Duplicate entry 'sys_id' for key 'PRIMARY')Issue "Save" UI Action is not working and the following error is displayed: Duplicate entry 'sys_id' for key 'PRIMARY') CauseUI Action (UI action rather than updating, is trying to create a record with the same sys_id )Business rule (the error generally pop-up when you have "current.update() " in your before Business Rule)ResolutionDifferent ways to solve this issue: Identify the Business rule and review it as the error generally occurs when you have "current.update() " in your before Business RuleReview your UI action, the script part by setting it to current.update(), rather than current.insert()