- Only allow data when: If present, indicates that this item should only be enabled (displayed/allow answers to be captured) when the specified condition is true.
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Key: = Must support, = QICore-defined extension, = Is-Modifier
Field Card. Type and Description 
answer[x] 0..1Boolean | Decimal | Integer | DateTime | Time | String | Uri | Attachment | Code | Quantity | ResourceIf present, then the answer for the referenced question must match this answer for all components present in the enableWhen.answer.hasAnswer 0..1BooleanIf present, indicates that this item should be enabled only if the specified question is answered or not answered.id 0..1Stringunique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.question 1..1StringThe linkId for the question whose answer (or lack of answer) governs whether this item is enabled.Key: = Must support, = QICore-defined extension, = Is-Modifier
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