The TransitionTimingConstraint element defines a timing constraint on a transition between structural elements as defined in a workflow. As such, it is a non-blocking constraint. This means that the transition is set on hold as long as the timing condition is not fulfilled, and is executed as soon as the timing condition is fulfilled.
The TransitionOID references the workflow Transition on which the constraint has to be executed.The TimepointRelativeTarget attribute defines the planned time between the two activities defined by the transition in the worfkflow, expressed as an ISO 8601 duration.
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