It is important to always verify if the details provided by your beneficiary match the ones you or your team sent for validation. Check for any typing errors when entering account or branch digits. Also, pay attention to the document number (CPF or CNPJ) provided, as any discrepancy between the document and the bank account will result in a validation error.
Another important check is to always verify the bank's identification code, as some banks may have different codes depending on the type of service offered. For example, the code for Itaú bank is 341, but confusion may arise with the code for Itaú Holding (652).