|V2X group ID||O||The group ID to be used for the V2X group. If group ID is not provided then the group ID should be allocated by group management server|
|Group join policy||O (NOTE)||The policy information to be enforced by the group management server for members joining the group|
|Group leader ID||O (NOTE)||The identity information of the V2X user to be used for user controlled group join|
If the information elements, identity list specified in TS 23.434 is empty and group leader ID is not included, then group join policy information element must be included.