Business identifiers enable you to track payload fields in messages during runtime. You define up to three business identifiers on payload fields during design time. You designate one field as the primary business identifier field, which enables message fields to be tracked during runtime.
During runtime, the Track Instances page displays information about the status of
business identifiers and their values in your integrations.
Description of the illustration track_instances.png
If you have defined business identifiers in integrations that have failed, you can view details on the Errors page.