Transaction not yet indexed

5k66tCdxp9sPd3nQS2HPJwEEByLRegUYJQLT7D7NVfR7bSHVMvwvXfUfjAr8HRemL4ZwCD7W7A8uAFvdoWKyz9Jk

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