Hey @d_daszkiewicz, Scope cannot be added/modified to a service. Adobe Analytics has the following scopes: openid, AdobeID, additional_info.projectedProductContext
Scopes are ready only.
I don't think any such scope exists; rather, the issue could be something else. Also, the suggestion to add segment.delete scopes seems to be incorrect. I ran a test in my project, and I was able to delete a segment without any issues, and my project doesn't have any such scope.

Scopes:

Can you confirm if you're using - https://developer.adobe.com/analytics-apis/docs/2.0/guides/endpoints/segments/#delete-a-segment?
When you create an integration, a technical account ID is created, which holds your permission. Can you check if the product profile is linked to the developer console project and has the necessary permissions? Also, the technical account ID needs to be added as product admin for Adobe Analytics.

I would suggest removing and re-adding the Analytics product profile if you're facing any challenges. If still an issue, please feel free to log a support ticket and we can take a further look.