Transaction not yet indexed

WFfZmSu28vtjsoSNtiAJqyp4ubCVTKtjB2FJjcMAJQcNfo65J35WGSErXCLyPHG8Ff4AXfaGrRbyp9tjJ7pDXTZ

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