Transaction not yet indexed

5Ku3smxKsjCWC6Dqe2N91i7fk6B51mYEciJ8UwFSnWdnQYDTVRYGPpJrqxQgPMvahnxcHHP6oRPsSHbJEw4sHzVo

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