Transaction not yet indexed

ymExdNPjKhcXpXZyyuoUwhnisn2MBFmXQRQPuUSRhpjFcKf4ByMrRhBsVVcqk8a4e8Zj4Rejjs6jwpEdKdtGQ2A

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