Transaction not yet indexed

NnkAxdqJS1rJCsPJrERaYHKRmLWjzJHbfUghDMT3ksc2Ko9t4DHdEEKM5kTYbJfoonjp5ZrLJENZsCybsFBRLN1

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