You can only release a transport request if you are the owner and only if all containing tasks are released.
You release a task when you have finished the development activities and only when a certain development status is to be released.
After you have released all tasks, you can release the transport request itself. Consequently, all objects of the object list that have been changed are available for import into another system.
The SAP GUI editor copies the task and the containing transportable objects into the target system and displays a confirmation message.
If the corresponding transport request does not exist in another system or client, this function creates it.