[Domain Mapping] Error indexing pages in multisite network

Hello!

I have a multisite network configured with subdomains.

I am using the domain mapping plugin.

I am also using the yoast seo plugin.

I'm having page indexing issues. Some subdomain site pages are being indexed to my main site.

See the attached image at the link below to understand my problem.

https://i.imgur.com/YggBYcO.jpg

How can I solve this?