Transaction not yet indexed

RX4SubJPzFcKmL6aTHBkAPkFbpb44JkT8SgC6N6Pt45Z8871bYpqyuLf7MKrzKTKHaRQqS3eRCZhXZ5f7GmBu7s

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