Choose the honest way forward. To do what is true to you will be appreciated among both customers and colleagues. Stand up for your values. But of course be aware that there might be different angles than yours.
Both in the team and with the customer. We all have different personalities and skills. In the best functioning teams we complement each other and take advantage of our differences. That’s when cooperation gets really powerful.
It might not be easy. You might not be able to solve everything by yourself. But you own the task, and until it is solved or you have to give up, you should do everything you can to find a solution.