Transaction not yet indexed

Am9AEMSY1X5fDRKwnqu859DKKWyTg4GrxFFWj69fiQRuuMvqq1dzDFJTdTsMsJUWap1ZSaCdXDhExEnE6eECDTD

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