Transaction not yet indexed

MK6fSB9YAT3boExJvr9gFWZbCr6HRVBZmgxewvoAy8D1sRvUBzpNMPPP98Tsj13gbeQx1G2SjSLmbAiGo2fZEn9

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