References
You can use multiple related documents in a monitor. In the monitor definition you can select references from the document metadata defined in the Registry, or use monitor conditions to define the document relations. If you use monitor conditions, you must define valid comparison conditions between the documents and use them in the monitoring rule.
When using monitor conditions to define document relations, you cannot use the monitoring rule of type Document Overdue.
After activation, at runtime, the monitor evaluates if the selected references or the defined conditions are satisfied. Only related documents are used to evaluate the monitor.
Note: In a monitor, you cannot use documents that are not related to each other.