Transaction not yet indexed

21UmS8JmffNJNXSsF1cgLL9pmMpCMpfaH7zLUSSmSPS76LjN7zT8x2UJC9sco8pNc1o6qqpDfKgHTRHWAXi16s3X

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