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Docs > Troubleshooting > Client-Side Issues > The 'ReferenceError: 'X' is not defined' error message appears when the Control.Enabled property is set to false
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The 'ReferenceError: 'X' is not defined' error message appears when the Control.Enabled property is set to false

Error Description:

The “ReferenceError: X is not defined” error message appears when you try to access a DevExpress ASP.NET control whose Enabled property is set to false.

Solution:

Client scripts are not rendered for a control if its Enabled property is set to false. This means you cannot access the control on the client. Instead, use the ClientEnabled property to disable the control and make it available on the client.

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