“Property Not Allowed” in angular.json error in Visual Studio CODE for Angular CLI version 9.1.1

Question

I created a new project using Angular CLI 9.1.1 and VSCode is giving me the following warning in angular.json file:

Property AM is not allowed
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Answer 1

There are 2 solutions which works for me 100% to overcome from the problem of "Property not allowed" in angular.json file.

1. Use the command in VS code cmd Ctrl+C choose option Y or

2. Restart the VS code after editing in angular.json file Hope it will helpful.