Transaction not yet indexed

21SK6yUQUM1XhKeDPLx6qF4rXfTo8gfjxKez7XByZmDMPF561v6ZqZ4e2MGCQF4wWzZF5iUgtryQx3oh1PbnP1P7

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