Transaction not yet indexed

NQ21aTiTZhkh4AXPfcFAimmkupW8F19uVC42EQBDqmQxvo5cJeVFAgMb3jHHAoQgf2dQbjrH3QCXmo62WHyQLj2

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