Enum EventReceiverSynchronization Specifies the synchronization state for the specified event receiver. Namespace: PnP.Core.Model.SharePoint Assembly: PnP.Core.dll Syntax public enum EventReceiverSynchronization : int Asynchronous Indicates to run the event receiver asynchronously. DefaultSynchronization Indicates to run the event receiver synchronously if it is a Before event. Indicates to run the event receiver asynchronously if it is an After event. Synchronous Indicates to run the event receiver synchronously.