Step 3. Select IAM Role to Access S3 Resources
At the Account step of the wizard, select an IAM role whose permissions Veeam Backup for AWS will use to access the target Amazon S3 bucket.
If you have not added the necessary IAM role to Veeam Backup for AWS beforehand, you can do it without closing the Add Repository wizard. To add the IAM role, click Add on the right and follow the steps described in the Adding IAM Roles section.