-XBT_PUBLIC aid_t sg_actor_get_PID(const_sg_actor_t actor);
-XBT_PUBLIC aid_t sg_actor_get_PPID(const_sg_actor_t actor);
-XBT_PUBLIC sg_actor_t sg_actor_by_PID(aid_t pid);
+XBT_PUBLIC aid_t sg_actor_get_pid(const_sg_actor_t actor);
+XBT_PUBLIC aid_t sg_actor_get_ppid(const_sg_actor_t actor);
+XBT_PUBLIC sg_actor_t sg_actor_by_pid(aid_t pid);
+XBT_ATTRIB_DEPRECATED_v331("Please use sg_actor_get_pid() instead") XBT_PUBLIC aid_t
+ sg_actor_get_PID(const_sg_actor_t actor);
+XBT_ATTRIB_DEPRECATED_v331("Please use sg_actor_get_ppid() instead") XBT_PUBLIC aid_t
+ sg_actor_get_PPID(const_sg_actor_t actor);
+XBT_ATTRIB_DEPRECATED_v331("Please use sg_actor_by_pid() instead") XBT_PUBLIC sg_actor_t sg_actor_by_PID(aid_t pid);