Transaction not yet indexed

21Xk8SHGcjprNdQSAUSU8qiizjPWsZYXNxGGwPDfXKcKTFRfTEGjZbpiVcFd7uNhqgtAfu1qinvKo4FcoSCbWtmc

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