diff --git a/api/@ohos.web.webview.d.ts b/api/@ohos.web.webview.d.ts
index 93c947d2b090ee1bdad1c95cbc767759ad48ef6c..53bbea4bb1f4e85937d52fef8c7e2c6cfc7e3f12 100644
--- a/api/@ohos.web.webview.d.ts
+++ b/api/@ohos.web.webview.d.ts
@@ -6509,6 +6509,7 @@ declare namespace webview {
      * And the unit is virtual pixel.
      *
      * @returns { ScrollOffset } page offset
+     * @throws { BusinessError } 801 - Capability not supported.
      * @syscap SystemCapability.Web.Webview.Core
      * @since 20
      */