Transaction not yet indexed

NMdxS2XD97K8PbWzLU8dkzqe3Rc7e8Tj2Qbw4Ehx4AvpADPK61rQkGLnZgCtzpQbPL8dL2wvshKFkzV6Ghqc16i

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