Transaction not yet indexed

NmffgPEsEr8gJ1b61JN694AF7z5kjRNVT4pb1ziTczf3Ng1e8eNTDMDRgTkEk5zdwPLsVTpyneTE52jpvKaFPjs

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