Checking Whether the Shard Key Can Be Obtained from the Source Database

Table 1 Checking whether the shard keys can be obtained from the source database
Check Item	Whether the shard keys can be obtained from the source database
Description	Check whether the destination database user permissions meet the migration requirements. If the permissions are insufficient, the migration will fail.
Failure Cause and Handling Suggestion	Item to be confirmed: The source database is a replica set but the shard keys have not been configured in the destination database.
	Item to be confirmed: The source database type is unknown, and the shard keys have not been configured in the destination database.
	Item to be confirmed: The source database contains collections that do not have shard keys configured.

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