Transaction not yet indexed

MM6aBAdfkhghJZdZUT7kuopj7ynaKQUwXXqwW9fq8jokfQ7SinFS1e2jcsodCfvdgBygPRUJvEFQPJgmvbGLGCC

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.