Transaction not yet indexed

28UgLyBzyDPTJacxXcxcNGSqNM45D8F4eoTWRMFnNYSATf5dwkrY6mGo6LdDBjHyX6gqngWkkbH2jTJxLB7Udmk8

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