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| (AuditRecord?, Signature?, Annotation*, (ItemData* | ItemData[TYPE]*)) |
Attributes:
| ItemGroupOID | oidref | Reference to the ItemGroupDef. | |
| ItemGroupRepeatKey | repeatKey | (optional) | A key used to distinguish between repeats of the same type of item group within a single form. |
| TransactionType | (Insert | Update | Remove | Upsert | Context) | (optional) | The TransactionType attribute need not be present in a Snapshot document. |
| ItemGroupDataSeq | integer | (optional) | Unique sequence # for each ItemGroupData child element (record) in the container element. |
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The ItemGroupOID and ItemGroupRepeatKey are used together to identify a particular item group. This pair of values uniquely identifies an ItemGroup within the containing Form. The ItemGroupRepeatKey is present if and only if the ItemGroupDef is repeating.
The ItemGroupDataSeq doesn’t have any other meaning than the sequence in which the items are saved and exchanged for each ItemGroupDef. It is equivalent to the observation # in a dataset.
ItemGroupData can also occur as reference data. In that case, the ItemGroupOID and ItemGroupRepeatKey pair must be unique within the reference data.
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