Transaction not yet indexed

t28AcQgcVbhF18rZVGeUpVrWdKaBc3hyaAphQmUM5NECP3NW2dHe4fFyw7WFVqZkjRGw5RvfTVxwJds4YuqpApE

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