Transaction not yet indexed

mmb2QU9z5BCSGrvxp4V2qaKzRj1Fz1MkNrLTtAEmPguqsCR648HHLqPnaPg2yPeaLMWp88U9sgbb4cPX2E8jU9F

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