<p>If <var>beStrict</var> is false:

<ol>

<li><p>If <var>result</var> is the empty string, <a>domain-to-ASCII</a> <a>validation error</a>,

return failure.

<li>

<p>If <var>result</var> contains a <a>forbidden domain code point</a>,

<a>domain-invalid-code-point</a> <a>validation error</a>, return failure.

<p class=note>Due to web compatibility and compatibility with non-DNS-based systems the

<a>forbidden domain code points</a> are a subset of those disallowed when

<i>UseSTD3ASCIIRules</i> is true. See also

<a href="https://github.com/whatwg/url/issues/397">issue #397</a>.

</ol>

<li>

<p><a for=/>Assert</a>: <var>result</var> is not the empty string and does not contain a

<a>forbidden domain code point</a>.

<p class=note><cite>Unicode IDNA Compatibility Processing</cite> guarantees this holds when

<var>beStrict</var> is true. [[UTS46]]