A controversial Orange Order procession is authorised to take place along Garvaghy Road in Derry for the first time in almost three decades.
The decision follows successful legal appeals lodged against an earlier prohibition on the route.
Members of the loyalist organisation will be permitted to march on Sunday morning after intervening court rulings overturned previous restrictions.
Initial approval had been granted by the Parades Commission with specific conditions attached to the event.
That initial permission was subsequently challenged in multiple Belfast courts over the weekend.
The High Court ruled early on Sunday that the original decision to allow the parade must stand despite objections raised by residents.
Conversations between the five-person commission and representatives from both the Order and local community groups occurred earlier this week.
Senior officers from the PSNI were consulted regarding security arrangements for the planned event.
It is understood approximately 200 police personnel are being deployed, including staff seconded from Scotland.
The route passes through areas where parishioners at St Patrick's Church on William Street may be impacted ahead of their morning service.
Historical context notes that disorder erupted along this street during the 1990s, marking one of the most severe incidents in Northern Ireland's recent past.
The commission's thirty-one paragraph determination included details of discussions held with security forces regarding crowd management.
Residents' coalition representatives attended a separate meeting to discuss potential impacts on local amenities and safety.
The event is scheduled to commence at 10:00 hours on Sunday.
No further legal challenges or public inquiries are currently anticipated before the procession begins.
Security protocols remain in place while the commission monitors the situation closely during the day.