Transaction not yet indexed

UbNk6bZgsBu3P8wUQmm9FH23wRqLsN3X2881xFBfZEqGBfBC4hAM6KXY2nPZzARVXZpuzKYETGQxVbSJ2ffFvee

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