As we said before Reality is always quite far from what has been designed at the beginning when the process was created. Indeed, to make the process really usable all the processes have to adapt to real situations which sometimes are not expected. That means, new exceptions of the process will appear regularly.
They can be linked to business issues, technical problems, unexpected events, new organization, new systems, etc. There’s many good reasons to see a process growing in terms of variation. We can also talk about Process deviations (synonym).
Analyzing the Process variations or deviations is also an important purpose of the Process Mining solutions, we’ll see this in details in this documentation.