In Table 91 – JSON NetworkMessage Definition, PublisherIs defined with type String. No explanation is given as to what to do with PublisherIds that are subtype of UInteger.

One possibility is that they are not allowed in JSON. That would not be good,as it should be possible to write PubSub convertors that work between the different mapping, and there won't be a way to convert possible UInteger PublisherId-s from UADP NetworkMessage-s to JSON.

Or perhaps the UInteger PublisherIds should be expressed in a string. In fact, for (Int64 and) UInt64, Part 6 says that (in 5.4.2.3 Integer). But other UInteger types (UInt32, UInt16, Byte) should be JSON numbers according to Part 6, which is in conflict with Table 91.

If we specify that all UInteger PublisherIds should be expressed in JSON string, we should then 1) specify how precisely the string should be formatted, and 2) think about the reversibility and equality (how then distinguish those that represent UInteger from those that are string but just happen to look like an integer).

Also see 0004501.