Transaction not yet indexed

Am1qH28e8QQTdWsU6uFEJThfZGfmeVNyhu4DFvd7CdEEqe6f8fbRwnSQbu6y7SUtQLNcsTpBypbTYb7u9c2XNZu

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