Transaction not yet indexed

Nk6XELcbnvXH4AAAuRk4HMNE4AEtbQaWLy2R48kiBcvDtidt4ugoZMS3MsUbFrYkCFadYMdDMTTmiLE2bBFzhiQ

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