Transaction not yet indexed

MCkZe57Th8dbGFkFtZFYib2G4wVqBaRjs2zPsDTF7WVDQSLpmEbCxnq3m2PDGz5bj7fFcA2NcrZpg1p2NcCq1Yv

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