Transaction not yet indexed

6U21kJcBy9WZWBNPT1EtkmNdwL1rM2Ja5WE5nD9ixxixmK2NEfrU2CLJZZdUkmdoLUZ1FFKCPifh8YDS2Y7P6iM

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