Transaction not yet indexed

668HhRQLRF5ZiaAMzAGtvznSRaiiFJyXcaLchv6q5Htpc68EknvqnC3ejSHRDsHAY26PEkbJB1rmexXNtyFEEbr8

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