if the same event (which leads to same eventID hash) is captured more than one time without error declaration is that an error?

gs1 / EPCIS

Draft files being shared for EPCIS 2.0 development

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Closed jmcanterafonseca-iota closed 2 years ago

VladimirAlexiev commented 2 years ago

IMHO yes. The hash id forces events to be "value objects" (no independent identity).

It's reasonable to assume that two different events, with the same data at the same readPoint and same millisecond, cannot be captured. But since a lot of fields are optional (including readPoint) while the granularity of eventTime is not mandated, this assumption is weakened.
So if the same event is received twice from some capture system, it should be treated as an identical event.

jmcanterafonseca-iota commented 2 years ago

Yes, and the 409 error shall be used to notify the client