Transaction not yet indexed

21ZbKRyDMnAJExuubh4zMsqsMFMv5TD9stPB3NDtVfUMbb6QyDqWJ8PSHER5CGVMpJBSwHRBkbu6aw4cZ4m4y4sW

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