A master node (MN) may send a secondary node (SN) addition request message to a target SN with an indication of a maximum number of candidate PSCells that can be configured by the target SN. The MN may receive an SN addition request acknowledge message with at least one candidate PSCell configuration from the target SN in response to the SN addition request message. The MN may send, if data forwarding is needed, a data forwarding message with an indication that the data forwarding is for a CPAC based procedure to a source SN. The MN may send a RRC message to a wireless communication device including the at least one candidate PSCell configuration and one or more associated CPAC execution conditions.