Transaction not yet indexed

5u66BD9dUXFHzNbEPya5NM6N8abcwiQSuGKc6mywGDfwA52tvnSePfastVqQA6t6YUH2DbPSP2dGrtDrDdwMbxqS

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