Transaction not yet indexed

668QsFmK7aZR5PnHnHt1mfaBY1ukFebCmrjQzFpuReSXmcqJu5NEsswAs6ka2L9zPwwCubtgd6ykNWtsMfxVtVeT

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