Transaction not yet indexed

21K8RE764ExtNbhDZZdN9vbzPZcqfvuFar9YhmFrFKkWfKX5aX8Vcs3UitPwcnhsHuqxgiYS4taA2LrM7Q2Sm5am

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