Once a service has been created with a customer association, it is possible to change the customer association.

The association of a service to a customer is a fundamental property established when the service is created. The customer ID cannot be modified after the service context has been created. To change the customer association for a service, the existing service must be deleted and then recreated with the new, correct customer ID.

The statement "True" is incorrect because the customer command within a service context is a create-time parameter and is not modifiable on an active or existing service. This is a design principle in SR OS to ensure service integrity and consistent accounting.

Nokia 7450 ESS, 7750 SR, 7950 XRS, and VSR Services Overview Guide, Release 22.10.R1, Part Number: 3HE 18378 AAAD TQZZA, Section: "Customers". This section describes the creation of customers and their association with services, implying the static nature of the binding post-creation. The command structure config>service>vpls customer create shows customer ID is part of the creation process.

Nokia 4A0-104 Course Material, Module 2: Services, Topic: Service Provisioning Workflow. The workflow explicitly shows that customer creation precedes service creation and that the service is created under a specific customer ID.