</em> is
            not the name of an existing program object.
        </p>
        <p>
            <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>propCount</code></em> is
            zero.
        </p>
        <p>
            <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>programInterface</code></em>
            is not one of the accepted interface types.
        </p>
        <p>
            <code class="constant">GL_I