SERVICE RELATIONS IN PROVISIONING OF COMMUNICATION SERVICE INSTANCE

A method of provisioning a communication service instance to a customer. The method performed at a network slice management function, NSMF, comprises receiving from a communications service management function, CSMF, a first message requesting an operation on at least one network slice instance, NSI. The first message comprises attributes and their values defining at least one service profile. The method further comprises sending to a network slice subnet management function, NSSMF, a second message requesting an operation on at least one network slice subnet instance, NSSI. The second message comprises attributes and their values defining at least one slice profile, wherein the at least one slice profile is based on attributes and their values defining profiles of at least one customer facing service, CFS, and at least one resource facing service, RFS, associated with said at least one customer facing service, CFS.