In order for Aimably and AWS to synchronize correct you must enable trusted access in your AWS organization. This is a simple process by just following the few instructions below.
To activate trusted access using the AWS CloudFormation console
Sign in to AWS as an administrator of the management account and open the AWS CloudFormation console by clicking this link - AWS CloudFormation Console
From the navigation pane, choose StackSets. If trusted access is deactivated, a banner displays that prompts you to activate trusted access.
Choose Activate trusted access.
Trusted access is successfully activated when the following banner displays.