A product is updated and the organization assumes that performance and risks remain identical. I propose that changes in the tasks actually carried out be verified.
In the example, a first stable output becomes less consistent with the required format. Verification should not be limited to commercial communication.
The service should be evaluated in the conditions of use and documented as long as is sufficient. If the organization is dependent on an external provider, alternatives and continuity must also be provided, preventing any change from being immediately transferred to customers.