Transaction not yet indexed

66u4kEXVmSwsbAGGgYEdMn2NfrEXwCf3MJkH2AeN1ysVdvRuFwaqDupevHrakgCdW6KLf2fVdrRRY1GxvgAFgPqq

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