PubSub: DataSetWriterId null value shall not be allowed
As far revision 67acdaa456dff2b910c207576e4cc429d54ce2a3
of S2OPC, it is possible to send PubSub messages with 0 as value for DataSetWritterId.
It is even the default configuration for samples.
But according to Part 14 (checked in revision 1.05), this value shall not be used:
All values, except for 0, are valid DataSetWriterIds. The value 0 is defined as null value.
The DataSetWriterId shall be within the range 0x0001 - 0x7FFF for external assignment by
configuration tools, and 0x8000 - 0xFFFF for internal assignment like through the Method
CloseAndUpdate of the PubSubConfigurationType.