Transaction not yet indexed

UDdmmJS53GmLbuQKgk1G2wdQBJaYgBM5w1aBRjfxtjQiimfQfgwuyJDu3sUAFCrZfyGRXQjcaMS4AL8XHmqJEmE

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