There are provided methods, arrangements and entities for an Access and mobility Function, AMF, and for a NF Repository Function, NRF in a 5G supporting Communication Network, CN, providing services to a User Entity. Also, a NF Repository Function, NRF, is described. A request (2A) for SMF information to the NRF to retrieve at least a list of SMFs that supports the DNN and optionally which network slices each SMF supports is transmitted.
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