Once a process definition has been created and is ready for use, it must be released before it can be executed by the workflow engine (See Process execution). As a process is being released using the PDT, it is examined to ensure all the information the engine needs to execute the process is present and internally consistent. The validations required to release a process are described in the various metadata sections of this document.
Only processes that have passed all of the required validations can be released and made available to the workflow engine. Once a process definition has been released it becomes read-only and can no longer be edited by the Process Definition Tool without creating a new version.