Transaction not yet indexed

MXkkc7TrLyy2PcC9xH2cj4uATtPS6jgiPsWLJDGs9EupYeFTtg7YLKvx8PdGntBDCkBJXJQAft9wVBySHF2iCkC

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