I have this error on the SYSADMIN Worklist, I'm running EBS 12.1.3 with RPC 5. Have looked at the notes below but they do not apply as i'm on a higher code base.
R12 AP: Workflow error in AP payments (ap_payment_event_wf_pkg.rule_function' for event 'oracle.apps.ap.payment) (Doc ID 1114116.1)
R12: AP: 'ORA -01403:no data found' When Attempting to Perform an 'Email Remittance' Note Test (Doc ID 467870.1)
An Error occurred in the following Event Subscription: Event Subscription