Transaction not yet indexed

n4U521Kt6bpR11kvAzxhJfbVaHTbVFNSHX5F7XRfWn6H8FH4FSq2pLWsDnJd2WGFhdsJG3BjaPH3UMjWeQzeRrF

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