Transaction not yet indexed

21f8rbTUAaYRGUE9yWftd8WSXAZU53Ss4YdMy4RY2j2vyCPqt5p9rPZyrd2ueK6MeC9wjAo3dtEAX2joLwotZzvP

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