Here is a list of all namespace variables with links to the namespace documentation for each variable:

• ACTION_NAME_MAX : rclcpp_action
• CANCEL_STASH_CAP : rclcpp_action
• DECLARED_DEPTH_MISMATCH : rclcpp::detail
• DECLARED_PARAM_MISMATCH : rclcpp::detail
• DECLARED_QOS_MISMATCH : rclcpp::detail
• GOAL : rclcpp_action
• kDomainIdExplicitZero : rclcpp
• MAX_CANCEL_INFOS : rclcpp_action
• MAX_STALE_DRAIN_PER_POLL : rclcpp::detail
• PUBLISHER_TOPIC_NAME_MAX : rclcpp
• SEQUENCE_ID_UNKNOWN : rclcpp::detail
• SUBSCRIPTION_TOPIC_NAME_MAX : rclcpp