Transaction not yet indexed

21Mb9QpD8vACF1F2ZZmrL8TNhhBJybw6wLvPtsvnbFuXEpb4KCSqFhawsMxth3kasZjgS7bDyCXhP3RQKs28MYv1

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