I was getting the message, "This app was built for an older version of android and may not work properly.", during GDS Mobile/KDS installation

Symptom: 

I was getting the message, "This app was built for an older version of android and may not work properly." during GDS Mobile/KDS installation.

Cause:

This message shows by Android 10 system. It doesn't affect on GDS Mobile/KDS running. 

Solution:

Just ignore it and press "OK" button to proceed to install GDS Mobile/KDS.