Transaction not yet indexed

1Xn21isSgYASnSJv1kvSni7oFXSYX7J3AQo76cDv2eNfYi35z87zokgPrNEv4J1vU29ihzFuKFhBChA1pXi8zSn

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