<note> <p>This is <b>AWS WAF Classic</b> documentation. For more information, see <a href="https://docs.aws.amazon.com/waf/latest/developerguide/classic-waf-chapter.html">AWS WAF Classic</a> in the developer guide.</p> <p> <b>For the latest version of AWS WAF</b>, use the AWS WAFV2 API and see the <a href="https://docs.aws.amazon.com/waf/latest/developerguide/waf-chapter.html">AWS WAF Developer Guide</a>. With the latest version, AWS WAF has a single set of endpoints for regional and global use. </p> </note> <p>Inserts or deletes <a>GeoMatchConstraint</a> objects in an <code>GeoMatchSet</code>. For each <code>GeoMatchConstraint</code> object, you specify the following values: </p> <ul> <li> <p>Whether to insert or delete the object from the array. If you want to change an <code>GeoMatchConstraint</code> object, you delete the existing object and add a new one.</p> </li> <li> <p>The <code>Type</code>. The only valid value for <code>Type</code> is <code>Country</code>.</p> </li> <li> <p>The <code>Value</code>, which is a two character code for the country to add to the <code>GeoMatchConstraint</code> object. Valid codes are listed in <a>GeoMatchConstraint$Value</a>.</p> </li> </ul> <p>To create and configure an <code>GeoMatchSet</code>, perform the following steps:</p> <ol> <li> <p>Submit a <a>CreateGeoMatchSet</a> request.</p> </li> <li> <p>Use <a>GetChangeToken</a> to get the change token that you provide in the <code>ChangeToken</code> parameter of an <a>UpdateGeoMatchSet</a> request.</p> </li> <li> <p>Submit an <code>UpdateGeoMatchSet</code> request to specify the country that you want AWS WAF to watch for.</p> </li> </ol> <p>When you update an <code>GeoMatchSet</code>, you specify the country that you want to add and/or the country that you want to delete. If you want to change a country, you delete the existing country and add the new one.</p> <p>For more information about how to use the AWS WAF API to allow or block HTTP requests, see the <a href="https://docs.aws.amazon.com/waf/latest/developerguide/">AWS WAF Developer Guide</a>.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}