A method performed by a first Network Function, NF, service provider in a 5G core network, 5GC, for enabling a specific functionality for a specific area of a communications network, wherein the 5G core network further comprises one or more second NF service provider managing the specific functionality in the 5G core network and a NF service consumer requesting the specific functionality to be performed by the second NF service provider for the specific area, wherein the method comprises: obtaining (502a, 6010), from each of one or more second NF service provider, information regarding the specific functionality supported by said each one or more second NF service provider, information regarding the network areas which said each of the one or more second NF service provider supports the specific functionality for and information regarding the address of said each of the one or more second NF service provider, receiving (508, 6020), from the NF service consumer, a request for an address of the one or more second NF service provider supporting the specific functionality for a desired network area, wherein the request comprises a network area information, wherein the network area information indicates the network area for which the specific functionality is desired, determining (508a, 508c, 6030), based on the received information from the NF service consumer and the information obtained from the one or more second NF service provider, the address of the one or more second NF service provider supporting the specific functionality for the network area indicated in the received request, sending (508, 6040), to the NF service consumer, the determined address of the one or more second NF service provider supporting specific functionality for the indicated network area, wherein the first NF Service provider is a Network Repository Function, NRF, each of the one or more second NF Service provider is a Single Radio Voice Call Continuity Function, SRVCCF and the NF Service consumer is an Access and Mobility Management Function, AMF, located in the 5G Core network, 5GC, wherein the step of determining (508a, 508c, 6030) the address of the one or more second NF service provider supporting the specific functionality for the desired network area comprises finding one or more second NF service provider which partially match the network area information and/or the PLMN received from the NF service consumer, wherein the determining (508a, 508c, 6030) further comprises selecting the one or more second NF service provider which have most information elements matching the network area information or the PLMN. obtaining (502a, 6010), from each of one or more second NF service provider, information regarding the specific functionality supported by said each one or more second NF service provider, information regarding the network areas which said each of the one or more second NF service provider supports the specific functionality for and information regarding the address of said each of the one or more second NF service provider, receiving (508, 6020), from the NF service consumer, a request for an address of the one or more second NF service provider supporting the specific functionality for a desired network area, wherein the request comprises a network area information, wherein the network area information indicates the network area for which the specific functionality is desired, determining (508a, 508c, 6030), based on the received information from the NF service consumer and the information obtained from the one or more second NF service provider, the address of the one or more second NF service provider supporting the specific functionality for the network area indicated in the received request, sending (508, 6040), to the NF service consumer, the determined address of the one or more second NF service provider supporting specific functionality for the indicated network area, wherein the first NF Service provider is a Network Repository Function, NRF, each of the one or more second NF Service provider is a Single Radio Voice Call Continuity Function, SRVCCF and the NF Service consumer is an Access and Mobility Management Function, AMF, located in the 5G Core network, 5GC, wherein the step of determining (508a, 508c, 6030) the address of the one or more second NF service provider supporting the specific functionality for the desired network area comprises finding one or more second NF service provider which partially match the network area information and/or the PLMN received from the NF service consumer, wherein the determining (508a, 508c, 6030) further comprises selecting the one or more second NF service provider which have most information elements matching the network area information or the PLMN.