Transaction not yet indexed

MBkn1ZAwcE1n44ubsXv6WFbcaUPSQ9xGaL7NLJ28enGASxEn1xgFhfNnDB1RQwRCtviQox9d2cnbMX6BC3USb42

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