Transaction not yet indexed

21Uwff16fLZW2WPdrYhCAgAq1M8FMHKC2zCK29zXeFSiDbDQj25h1FASpdggC9M7deSimQj8ww2ZCYC5hx24vpjL

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