Transaction not yet indexed

5sb21zktjciC7vEFvzvkaQ9D2UHh8d9GeAeMC8cern5yfegQJLQS9mm2aNKTjhmUTC1vrofuPjHCJcTcEo4x3W2T

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