| Attribute | Schema Dataype or Enumeration | Usage | Definition | Business Rules |
|---|---|---|---|---|
| OID | oid | Required | Unique identifier. | Must be unique within the Study. |
| Name | name | Required | Human readable name. | Must be unique within the set to timing constraints within the Study. |
| PredecessorOID | oidref | Required | Identifies a StudyEventGroup, StudyEvent, ItemGroup or Item that occurs immediately before the RelativeTimepointTarget. | Must match an OID for a StudyEventGroupDef,StudyEventDef, ItemGroupDef or ItemDef in the same Study/MetaDataVersion. |
SuccessorOID | oidref | Required | Identifies a StudyEventGroup, StudyEvent, ItemGroup or Item tha occurs immediately after the RelativeTimepointTarget. | Must match an OID for a StudyEventGroupDef,StudyEventDef, ItemGroupDef or ItemDef in the same Study/MetaDataVersion. |
| TimepointRelativeTarget | durationDatetime | Required | The relative timing between two activities or groups of activities. | Must be expressed as an ISO 8601 duration |
| Type | (StartToStart, StartToFinish, FinishToStart, FinishToFinish) | Optional | Defines how the timing is to be defined between the two activities, starting from the start or the end of the source activity, and ending at the start or the end of the target activity. | If not provided, Start to Start is assumed. |
| TimepointPreWindow | durationDatetime | Optional | Adds a lower bound to a time window for the RelativeTimepointTarget. | Must be expressed as an ISO 8601 duration |
| TimepointPostWindow | durationDatetime | Optional | Adds an upper bound to a time window for the RelativeTimepointTarget. | Must be expressed as an ISO 8601 duration |
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