Reminder category is missing for &1/&2, rule &3
Message type: E = Error
Message class: RECARS - Reminders
Message number: 029
Message text: Reminder category is missing for &1/&2, rule &3
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Object explained sufficiently by short textError message extract from SAP system. Copyright SAP SE.