Transaction not yet indexed

53a99F6ZkfDxuDCwZL3XfeZqPpiaN8LQdvrAQQddNDrXnw4RtPoGjWa3mhAqwtxUjY21EMnwcVFHeQGKe8WPn1Kk

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