Transaction not yet indexed

Hc21dhJvKizwuJXGi1H8peDLKJGR2wkjVgpKAsf2v5LjhEn2zA51ydSJD9E7sEyHe9HSPc6d2bFHDNKac2eh8aZ

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