Which shape is used to send and receive data from external system
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Integrator
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Ticket
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Fork
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Split-Join
The Integrator shape in PRPC flows is specifically designed for sending and receiving data from external systems. Ticket is for case processing, Fork branches flow execution, and Split-Join handles parallel processing - only Integrator manages external system communication.
In Pega process flow design, the Integrator shape represents a synchronous call out to an external system (invoking a connector rule) to send and/or receive data — it's the flow-level construct for external system interaction. Ticket is used to signal exception/alternate paths within a flow, Fork splits a flow into a choice of paths for the user, and Split-Join runs multiple paths in parallel and rejoins them — none of these are about talking to an external system, so Integrator is the correct shape.