Method CancelOrder is been deactivated and cannot be called.

How can this error be possible?

Method CancelOrder(VI.DB.Entities.ISession, VI.DB.Entities.IEntity, System.String, System.String, System.String, System.Threading.CancellationToken) is been deactivated and cannot be called.

I try to call this method from object browser on a sigle order in Q1im 7.1.2