Transaction not yet indexed

MkNKB21qqNLP3Wei2QP8a8adM7eCsUEJUJ4HjKWKkqGFFbQN2q536uw4tfzwvic3DwQbSYKsspZVyP2aMo1yrAX

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