What form is required if a customer moves again within 18 months?

In the context of postal operations, if a customer has moved within the last 18 months and needs to change their address again, they are required to use the correct form to ensure that their mail is routed properly.

PS Form 3546X serves as a request for the customer to report an address change after they previously filed a request for forwarding their mail. This particular form is significant because it allows for the efficient management of mail delivery and helps prevent delays or misdeliveries.

The other forms listed serve different purposes and are not applicable in this situation. For example, PS Form 3575 is typically used for a permanent change of address request, while PS Form 8105 is related to identifying and recording changes in address for established customers. PS Form 2876 is specific to certain postal services and does not cater to address changes in the same context as PS Form 3546X.