Transaction not yet indexed

LETTA2Qh9jqpcq6hocTfzyMeSUe4HUMNaWSWSEtGv2EfM6euSdbJiVwbHWNYUJesVRpSsa8PpHowyT1UdENP5Ee

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