I am unclear as to whether it is permissible in a BPMN 2.0 model for a timer to be the Start Event for an event sub-process, such as in the simplified example below:
The BPMN 2.0 documentation (version 2.0.1 dated 2013-09-02) on page 174 (section 10.3.5, Event Sub-processes) suggests this is not permissible:
The Start Event of an Event Sub-Process MUST have a defined trigger. The Start Event trigger (
EventDefinition) MUST be from the following types: Message, Error, Escalation, Compensation, Conditional, Signal, and Multiple(see page 259 for more details)
On page 241 (section 10.5.2, Start Event), the specification states that a Timer is allowed as a Start Event:
A Start Event can also initiate an inline Event Sub-Process (see page 174). In that case, the same Event types as for boundary Events are allowed (see Table 10.86), namely: Message, Timer, Escalation, Error, Compensation, Conditional, Signal, Multiple, and Parallel.
Which of these sections would apply in the case of the above example?