Transaction not yet indexed

Uk91TwVMmnezwNkSAnFNKPHo37ZiiGEsbegqn1NrY6KCbFuS4KGWhHFZwnfWENu4fS7msbrQjYVT7cEyUVVMHMf

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