Section: 15.5.2.8 Successful PSCell Addition/Change Report
Content: For the analysis of successful PSCell addition/change, the UE supports Successful PSCell Addition/Change Report (SPR) based on the configuration by network, if received, and makes the SPR available to the network as specified in TS 38.331[ NR; Radio Resource Control (RRC); Protocol specification ]  [12]. The UE stores the SPR until the SPR is fetched by the network or for 48 hours after the SPR is recorded. The UE makes the SPR available to gNB(s). When a gNB fetches the SPR from UE, it forwards the SPR to the MN that was serving the UE at the time the SPR was generated by using the ACCESS AND MOBILITY INDICATION message over Xn or by means of the Uplink RAN configuration transfer procedure and Downlink RAN configuration transfer over NG.