{"total":2,"results":[{"code":400,"name":"PINNED_TOPIC_NOT_MODIFIED","methods":["channels.updatePinnedForumTopic"],"description":"The specified topic is already pinned."},{"code":400,"name":"TOPIC_NOT_MODIFIED","methods":["channels.editForumTopic","messages.editForumTopic"],"description":"The updated topic info is equal to the current topic info, nothing was changed."}],"layer":227}