Forum Discussion
Sharepoint List lookup value not adding additional fields values
The first JSON you are using to show the email address in 'Owner Email Address' field is written using SharePoint JSON formatting and SharePoint JSON formatting only customizes the display of columns/views. It does not store/save any value in the column the itself.
Hence, you cannot refer the "displayed" values of 'Owner Email Address' column using the SharePoint lookup column in the second SharePoint list (Actions).
Documentation: Use column formatting to customize SharePoint
You will have to store the actual email addresses in 'Owner Email Address' column using Power Apps customized forms or using Power automate flow (on item creation and/or item update).
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