This video deserves the motto ‘old but gold’
Serge Luca aka Doctor Flow has already created an approval management solution with PowerApps & PowerAutomate in 2020.
Why can this solution be a good example of your solution?
– Flow Duration is max 30 days
– Approval Duration is max 30 days
– Processes are sometimes months or years
The best is The solution is available for free including descriptions for download and there is a current 2022 version here -> https://github.com/sergeluca/Power-Platform-BPM-Toolkit
You can see this video here on my blog because I have rated this video with 5 stars in my Youtube video library. This video was automatically posted using PowerAutomate.
Marcel Lehmann 
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