Transaction not yet indexed

5987QHpiAkKpJBisCwAGaUoVeW6ynNLgpMySYqRo2ni6n19Cfk9741cst7yhNHfeEGo9XdDmg4PvTnEQmBZqwDG6

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