The WriterGroupIdwith DataType UInt16is an identifier for the WriterGroupand shall be unique across all WriterGroupsfor a PublisherId.All values, except for 0, are valid. The value 0 is defined as null value.

The WriterGroupIdshall be within the range 0x0001 - 0x7FFF for external assignment by configuration tools, and 0x8000 - 0xFFFF for internal assignment like through the Method CloseAndUpdateof thePubSubConfigurationType.