Transaction not yet indexed

5b91mgcvwwEwPm2NsBfaJDsJrfJPMbb8EJZUPbkGSEkiAevc7jtqCFwKt8Jib7cKZ7yPXQW8XNZddHsp8uhyFJsT

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