Transaction not yet indexed

MdX6zzUaF67nTkdFPr8XF6C2ywgPre3cUQ5zaXwhvXhrqteQBFgrVpRG2cW5DMkffAk6aGCEgpEF7MccTS11nEf

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