Transaction not yet indexed

AMpNDvTMXfZHVjmHiaTD5YvAWPW4FkpKcVfUhmn3nEGj2nSCqE9CYU5hEfZ8PMUfaEpm3crvcMNeP2fa3XSeyPU

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