Transaction not yet indexed

ymECpBmqZ7a5TgKfapffKxjiHBNtmF8E28ECLQSgN4W7AyQumTrAvJiKgC8EyuPTmuyoPyQqWKPkkb8bgkEEHdg

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