Transaction not yet indexed

1CMMtauApbaZKt8jxkiVtF4ba44V2pLoQQu2ZdR8okvcZQwExJwKuAMMuQe76Be46ZMhRN6g2x8YTGF7gxYUGH9

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