Completion message while ending a task

Hello All,

We have a process wherein user completes one task and another task is automatically getting accepted to them. When user clicks the end button they are not able to see anything and new task is opened for them, This makes a confusion in order to understand whether the task was closed or not and the task that they are seeing is the new task or the same old task. Hence, As a solution to it we are looking for some kind of message display or something similar that can tell the user that your task is successfully closed. Can someone please help here? Thanks in advance

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