Please find a unique entity in the social insurance agency. What does that mean?

This means that each insured person can only have one unique social security agency.

The unique subject of social security agency positioning means that in the social security system, each insured person can only have a unique social security agency, which is responsible for the handling and management of social security affairs of the insured person. In other words, a person's social security information can't appear in multiple social security agencies at the same time, so as to avoid repeated insurance or missed insurance.

Social security agencies usually refer to social security agencies under the local human resources and social security bureaus, such as social insurance administration and social insurance fund management centers. They undertake unique and irreplaceable responsibilities as social security institutions within their respective jurisdictions to ensure the effective operation of the social insurance system and benefit all insured persons.