Transaction not yet indexed

CM66f6mDNZfBT4dTMCg3pEN2wgRjoUaFmvPS4FdRTy1oWa15swNETAr4BWKu1fLDqWRqFppPcAUFqi1vTETXf6Y

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