Transaction not yet indexed

mntGoDTwDTwW7MKrrXDPpZbgHi8ZtqFLivSGVsJ2DN2oh66Lrv9XSn623ATQqEjtpTNPRCnfcp5x1YSRRxiDRyZ

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