1. By means of the formal, established, and authorized procedures or routes of an organization or government
The complaint was filed through official channels to ensure proper documentation.
A reclamação foi apresentada através dos canais oficiais para garantir a documentação adequada.
2. Using the proper and legitimate pathways rather than informal or unofficial means
All requests must go through official channels for approval.
Todos os pedidos devem passar pelos canais oficiais para aprovação.