A method for mobility enforcement performed by a control node, the method comprising: receiving (1002, 1100) a first control plane message transmitted by a wireless communication device, WCD currently using at least one Packet Data Network, PDN, connection, said PDN connection being associated with a set of one or more Packet Data Unit, PDU, sessions; and in response to receiving the first control plane message, performing a procedure comprising: obtaining mobility information for the WCD, said mobility information for the WCD identifying at least one of: a set of one or more allowed regions, a set of one or more allowed radio access technologies, RATs, and a set of one or more access points, the obtained mobility information for the WCD comprising an authorized Session Management, SM, class for the PDN connection; and transmitting (1020, 1106) to the WCD a response message comprising the mobility information for the WCD, said response message identifying, at least one of: the set of allowed regions, the set of allowed RATs, and the set of one or more access points; receiving a request from the WCD, the WCD being in a connected mode, for setup of bearers that are assigned the authorised SM class that is not subject to pre-setup of resources at mobility for any of said PDU sessions; determining whether the SM class for the PDN connection is the authorized SM class; and as a result of determining that the SM class for the PDN connection is the authorized SM class, transmitting to a RAN node a message indicating that pre-setup of resources at mobility is not required for any of said PDU sessions. receiving (1002, 1100) a first control plane message transmitted by a wireless communication device, WCD currently using at least one Packet Data Network, PDN, connection, said PDN connection being associated with a set of one or more Packet Data Unit, PDU, sessions; and in response to receiving the first control plane message, performing a procedure comprising: obtaining mobility information for the WCD, said mobility information for the WCD identifying at least one of: a set of one or more allowed regions, a set of one or more allowed radio access technologies, RATs, and a set of one or more access points, the obtained mobility information for the WCD comprising an authorized Session Management, SM, class for the PDN connection; and transmitting (1020, 1106) to the WCD a response message comprising the mobility information for the WCD, said response message identifying, at least one of: the set of allowed regions, the set of allowed RATs, and the set of one or more access points; obtaining mobility information for the WCD, said mobility information for the WCD identifying at least one of: a set of one or more allowed regions, a set of one or more allowed radio access technologies, RATs, and a set of one or more access points, the obtained mobility information for the WCD comprising an authorized Session Management, SM, class for the PDN connection; and transmitting (1020, 1106) to the WCD a response message comprising the mobility information for the WCD, said response message identifying, at least one of: the set of allowed regions, the set of allowed RATs, and the set of one or more access points; receiving a request from the WCD, the WCD being in a connected mode, for setup of bearers that are assigned the authorised SM class that is not subject to pre-setup of resources at mobility for any of said PDU sessions; determining whether the SM class for the PDN connection is the authorized SM class; and as a result of determining that the SM class for the PDN connection is the authorized SM class, transmitting to a RAN node a message indicating that pre-setup of resources at mobility is not required for any of said PDU sessions.