Error checking allowed values for input nodes of duration and date and time types

From Melanie:
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Maybe something is off in our serialization, but when I try to execute the attached file it always tell me my values are incorrect event when they are within the allowed range. That file is a really dumb decision that just create a boxed context with the two inputs it gets. Those inputs are one yearMonthDuration and one date time. Both are defined with Item definition and have a constraints on them. Setting constraints on all the other types works fine.
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Here are the messages:

I send P20Y and 2017-05-16T17:58:00.000Z to the back end. Then I use (BuiltInType) BuiltInType.determineTypeFromName(type) in the back end to have the proper feel type and feelType.fromString(value) to get the proper object.

The returned type for yearMonthDuration is duration and a Period with the proper value is create for it. For date time it is a DATE_TIME and a ZonedDateTime is create for it.

All of that seem fine.
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