Transaction not yet indexed

21Ku5phTL7Ht6sBH1WG2AwZQTv3jKg5RdQu7jxA2CWC95STYaRzJ4RUNTN3fcnE7NmbNbtXgLtydNiJsM7kADVdY

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