| CPC H04L 67/14 (2013.01) [H04W 76/34 (2018.02); H04W 80/10 (2013.01)] | 20 Claims |

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1. A method performed by a first session management function, comprising:
determining first N4 information related to a user plane function (UPF) wherein the first N4 information comprises an identifier of the UPF; and
sending a first message comprising the first N4 information to a second session management function.
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