Transaction not yet indexed

MUm8ywrwvr9EiYunSFPRKP8N7hGEdRgxYNExuiu1KFEkvpCLzXeFUfii52XUz3VbZ1tFmvu4vncK52AwQRaEg47

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