Transaction not yet indexed

UUN4jEgLSwcFFrGPHmjhvrUS9gKC71PdKpm1quLZiwsg2fjGh7r8wmWFdVhm19RVkcQF4LFG7oPy2FUbW3di9fX

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