Transaction not yet indexed

EX6tpAvhiuNUPKBA7y7rarwVFRaXtsdrJS1h6jcPobvSd3eGC8DaA4mi9zhBVct8xbGZhAx2rQcE2ru1kG8Bty8

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