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| Attribute | Schema Datatype or Enumeration | Usage | Definition | Business Rules |
|---|---|---|---|---|
| OID | oid | Required | Unique identifier. | |
| Name | name | Required | Human readable name. | |
| TransitionOID | oidref | Required | References the workflow Transition on which the timing constraint must be executed. | |
| TimepointRelativeTargetTimepointTarget | durationDatetime | Conditional | The planned time between the two activities defined by the transition in the worfkflow, | Must be expressed as an ISO 8601 duration. Either the TimepointRelativeTarget TimepointTarget or the MethodOID must be provided - not both. If the value is a "zero time duration", i.e. one of "P0D", "PT0H", "PT0S", the transition must be executed immediately, or within the provided time window, when provided. |
| MethodOID | oidref | Conditional | References a MethodDef that returns a durationDatetime. Use of a method allows timings that depend on other pieces of information, or complex timing calculations. | Must match the OID attribute of a MethodDef element in this Study/MetaDataVersion. The MethodSignature for the referenced MethodDef must identify the input parameters and a return value Dateype of durationDatetime. If the returned value for the method is a "zero time duration" i.e. one of "P0D", "PT0H", "PT0S", the tranistion must be executed immediately, or within the provided time window, when provided. Either the TimepointRelativeTarget TimepointTarget or the MethodOID must be provided - not both. |
| 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 | Specifies the amount of time prior to the TimepointRelativeTargetTimepointTarget, the time between the two activities, may be shortened. | Must be expressed as an ISO 8601 duration. |
| TimepointPostWindow | durationDatetime | Optional | Specifies the amount of time after the TimepointRelativeTargetTimepointTarget, the time between the two activities, may be lengthened. | Must be expressed as an ISO 8601 duration. |
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