Observation - value [x] cardinality 0..1

#1

value [x] cardinality 0…1

So my assumption is you cannot have multiple types defined at the same time.

i.e valueQuantity and valueString

Please confirm!

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#2

You could allow valueQuantity or valueString, but you couldn’t have both. (Note that valueQuantity could have an extension that expresses a string rendering of the quantity if that were necessary.)

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