Error on insert operations on Azure Mobile Services - Cannot insert the value NULL into column 'CreatedAt'

I have deployed an instance of a Azure Mobile Service 

I have been trying to test the POST endpoint and receive the following error on the test URL

{"message":"The operation failed with the following error: 'Cannot insert the value NULL into column 'CreatedAt', table 'XXXX_db.<SchemaName>.Request'; column does not allow nulls. INSERT fails.\r\nThe statement has been terminated.'."}

Is there a way to fix this error?

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