Bell notification hyperlink is not working properly

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Hi Team,

We have an requirement to send an approval notification to the manager through email as well as in bell notification. In the bell notification the record name will appear that needs to be approved by the manager in hyperlink when trying to drilled down the record from bell notification it is not picking up the right record it is navigating to the some other record with in the same object.

We have an custom object called selling limit for that only we are trying to configure the approval process. The script has been written in the custom object only in before update