diff --git a/api/@ohos.data.unifiedDataChannel.d.ts b/api/@ohos.data.unifiedDataChannel.d.ts
index bdc283df1fec4dc465c1b011c64750a5d43cdece..e7716a641279582942207ebb85df8e26e6345382 100644
--- a/api/@ohos.data.unifiedDataChannel.d.ts
+++ b/api/@ohos.data.unifiedDataChannel.d.ts
@@ -1913,7 +1913,7 @@ declare namespace unifiedDataChannel {
    * Indicates the callback function for loading data.
    *
    * @typedef { function } DataLoadHandler
-   * @param { DataLoadInfo } acceptableInfo Indicates the type and number of data that can be accepted by the receiver.
+   * @param { DataLoadInfo } [acceptableInfo] Indicates the type and number of data that can be accepted by the receiver.
    * @returns { UnifiedData | null } the {@link UnifiedData} object to be loaded.
    * @syscap SystemCapability.DistributedDataManager.UDMF.Core
    * @atomicservice