Transaction not yet indexed

ymNFUXG43AucFmRG6qqcnPcuS8Z9JkZXQFE8aG87LumMkXxYbPD7WBmzjTapnMfvrAv75hyZqAidkJZS9isKNm7

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