Transaction not yet indexed

1MbbZMXK77jycPzHZqDbHv1eJ9uKbGkXaN5wQJBVhV7fiY9VPvPAF9nPkacQLRHUXePrg7tf71MsGst1kkjv3UM

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