Core component of SQL Server for storing, processing, and securing data
The account specified for the connection should only be granted permission to insert, update, and delete data on the views that replication creates in the publication database; it should not be given any additional permissions. Grant permissions on views in the publication database that are named in the form syncobj_<HexadecimalNumber> to the account you configured at each Subscriber.
See more info at https://learn.microsoft.com/en-us/sql/relational-databases/replication/security/view-and-modify-replication-security-settings?view=sql-server-ver16