This documentation is for WSO2 Enterprise Integrator version 6.1.1 . View documentation for the latest release in the 6.x.x family and the latest release in the 7.x.x family.

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  • Create a dynamic sequence by referring to an entry in the registry, in which case the sequence will change as the registry entry changes.
  • Activate statistics collection by setting the statistics attribute to enable. In this mode the sequence will keep track of the number of messages processed and their processing times. For more information, see Monitoring WSO2 EI Using WSO2 Analytics.
  • Activate trace collection by setting the trace attribute to enable. If tracing is enabled on a sequence, all messages being processed through the sequence will write tracing information through each mediation step.
  • Use the onError attribute to define a custom error handler sequence. If an error occurs while executing the sequence, this error handler will be called. If you do not specify an error handler, the fault sequence will be used, as described in the next section.


By default, the fault sequence will log the message, the payload, and any error/exception encountered, and the drop mediator stops further processing. You should configure the fault sequence with the correct error handling instead of simply dropping messages. For more information, see Error Handling.



General information about Mediation Sequences in WSO2 EI.