Transaction not yet indexed

NNDmEkoSiPmGbCge7mCZcMGUbzu6uKehqdzE38if5Vuyae9f7d61p37Fq5xhjWXuGFi3U7DcrDdVUfksb8Tnsx7

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