Error: Object of type ‘Microsoft.Xrm.Sdk.Entity’ cannot be converted to type xxx + Dynamics 365

Error Message:

While retrieving or updating data into CRM using LINQ, CRM will show below exception:

Exception Type: ArgumentException
Message: Object of type ‘Microsoft.Xrm.Sdk.Entity’ cannot be converted to type ‘XXX’.

Solution:

We need to add below line while creating Organization Service for Dynamics 365.

serviceProxy.ServiceConfiguration.CurrentServiceEndpoint.Behaviors.Add(new ProxyTypesBehavior());