Gateways are used to manage the flow of a process in general and to converge and diverge the sequence flows in particular.
Sequence flow divergence occurs in the following cases:
•Alternative paths of the process flow exist;
•Two or more stages of the process must be executed simultaneously.
Sequence flow convergence is used when a certain stage of the process must begin after several process branches are executed.
The logic of converging and diverging differs depending on the type of the gateway used.
For converging and diverging sequence flows any type of gateway can be used. For converging flows it is recommended to use the same type of gateway that was used earlier in the process for diverging.
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