This read-create port list identifies which ports this traffic template is mapped to, with the constraint that a port cannot be mapped to more than one template, and the source DESCRIPTION noting this mapping is ignored on devices that use one common template for every port. An admin sets it to assign a specific traffic template's queue and priority behavior to a chosen set of ports, on devices that support per-port template differentiation. For example, an admin wanting a lossless, PFC-enabled template applied only to storage-facing ports would map just those ports to that template here.