Sometimes, you’ll receive a Stax billing bucket mismatch error when you’re trying to link Stax to your AWS account.
This happens if you change the Stax Billing Bucket Name you entered into the Stax-provided Billing S3 Bucket Name space on the AWS Create Stack page.
To fix it, go to the Stax account linking process and click the Open AWS Console button again.
This will open the AWS Create Stack page showing the CloudFormation template again. This time, make sure you leave the billing S3 bucket name exactly as it appears when the page loads.