After the data migration is complete, you can view detailed information about the migration through the migration report and migration list. This article explains how to view the migration report, migration list, and provides descriptions of the migration list parameters. ## Background information After the data migration is complete, the DMS generates a migration report and a migration list, as follows: * Migration report: Includes information such as migration tasks, target sites, and source sites. The report is named `dms--___report.pdf`. You can access the migration report in the DMS console or in the destination storage bucket for the data migration. * Migration list: Contains details such as the names and sizes of migrated objects, as well as migration results. You can access the migration list in the destination storage bucket for the data migration. If you lack permission to access source objects or attempt to migrate archived objects that have not been restored, the migration will fail. The list names for successful and failed migrations are different. Details are as follows: * Successful migration list: The name is `dms--___success`. * Failed migration list: The name is `dms--___failed`. ## Prerequisites Data migration has been completed or ended. ## Notes Only the latest version of each object will be migrated; previous versions will not be transferred. If the source objects contain historical versions, the number of objects in the source and the destination buckets may not match. ## View migration report **View the migration report in the DMS console** 1. Log in to the [Data Migration Service Console](https://console.volcengine.com/dms). 2. On the **Migration Task List** page, click **··· \> Download Migration Report** in the **Actions** column of the target task. **View the migration report in the target bucket** 1. Log in to the [TOS Console](https://console.volcengine.com/tos). 2. Click **Bucket List** in the left navigation bar and then click the name of the target bucket for data migration on the **Bucket List** page. 3. In the root directory, find the file named `dms--___report.pdf`, then click **Download** in the **Actions** column for this file. ## View the migration list 1. Log in to the [TOS Console](https://console.volcengine.com/tos). 2. Click **Bucket List** in the left navigation bar and then click the name of the target bucket for data migration on the **Bucket List** page. 3. In the root directory, find the file named `dms--___success` or `dms--___failed`, then click **Download** in the **Actions** column for this file. After downloading the migration list to your local device, you can view it locally. The migration list includes details such as file name and file size, formatted as shown below: ![图片](https://p9-arcosite.byteimg.com/tos-cn-i-goo7wpa0wc/24aa410ac61b43a9b9d9e48163abfa61~tplv-goo7wpa0wc-image.image) The migration list parameters are described as follows: |**Parameter** |**Description** | |---|---| |key |The name of the object you are sharing. | |size |File size. | |state |Migration result. Value descriptions are as follows:

* `success`: The object was migrated successfully.

* `failed`: The object migration failed.

* `skip`: During migration, the object was skipped and not migrated.

* `notExist`: The object does not exist. This issue may occur when the source object is deleted during migration. | |crc64 |The object's CRC64 checksum. | |completedTime |Migration completion time. | |message |Details of migration failure. For example, when migrating data while retaining original storage attributes, if TOS does not support a specific storage class from another cloud provider, the object will be set to standard storage by default. At the same time, `message` will display `unknown storage class, upload with default standard storage class`. |