The INVOKE Step
Use the INVOKE step to request a service within a flow. You can use the INVOKE step to:
Invoke
any type of service, including other flow services and web service connectors.
Invoke any service for which the caller of the current flow has access rights on the local
webMethods Integration Server.
Invoke built-in services and services on other
webMethods Integration Servers.
Invoke flow services recursively (that is, a flow service that calls itself). If you use a flow service recursively, bear in mind that you must provide a means to end the recursion.
Invoke any service, validating its input and/or output.