Transaction not yet indexed

UCmkSGoCa8Z6kNBSEPrSBfbkC6Rq6f6Jzb1EfQVRahTv92CUEebktVhVFFN1fEqpsVYNZShP4HjrTFH9hhuyHbS

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