1. The formal verification and acknowledgment that a task, project, or process has been finished successfully
We received confirmed completion of the construction project last Friday.
Recebemos a conclusão confirmada do projeto de construção na última sexta-feira.
2. Official documentation or notification stating that a work has been accomplished and verified
The client requires confirmed completion before final payment is made.
O cliente exige conclusão confirmada antes que o pagamento final seja efetuado.