If you see the error message ‘Insufficient permissions to copy across organizations’ this means that you are a guest of the organization and have not been permitted to copy specification content.
To resolve the error and enable copying between organizations, contact the Project (or Master) Administrator of the source project (or master).
The Project (or Master) Administrator should access the ‘Edit project’ or ‘Edit master’ section and check the box labeled ‘Guests can copy specification content to another organization’. To assist them, it is recommended to share a link to this article.
Related article: How to enable guests to copy content to another org