Transaction not yet indexed

5u21ZVBTEiKoD6RGKSN4RHVBHay2T5Wn4FxkLA9kTJrV67okDrtQT8CfjK7X1Y6KN2frtM5ffVRtjEmcfJ8Ysx54

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