Dynamic Apps Platform : webMethods BPM Process Development Help : Process Engine Processing : About Document Correlation : About Correlation Fields
About Correlation Fields
Process Engine enables you to specify a correlation field to apply correlation on certain receive tasks, signal start events, and message start events, thereby establishing correlation without specifying or creating a correlation service. In this case, the specified field exists in the receive document and serves as the correlation identifier.
When a correlation service is executed, the expected output is a ProcessCorrelationID that is used as the correlation identifier. Instead of executing a service, the Process Engine retrieves the specified correlation field from the input document and uses it as the correlation identifier.
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