There is a fundamental difference between Jira Server/Data Center and Jira Cloud in reference to post functions: In Jira Cloud, post post functions of apps are executed asynchronously as a 'background job'. This means a post function will be executed after the transition has been completed on Jira Cloud.
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Note the following behaviors of the asynchronous execution: If you are using multiple post functions, there is no guaranteed order in which they are performed. They might be executed in a different order from the one you set up in Jira's workflow configuration. Therefore, you cannot rely on any result of a ' previous ' post function. Also, the order in which the post functions are executed might be different every time the transition is performed. If a post function encounters a problem (due to misconfiguration or the current data of a Jira issue), the transition (and all other post functions) will be performed regardless of the problem. The result of a post function might not be visible immediately in the browser. There are no error messages displayed to the user.
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