Please check the solution according to the error message displayed.
If "You do not have operation privileges" is displayed
This is likely because you lost the privilege to duplicate the relevant manual during the duplication process.
Please check if you have the privilege to duplicate the manual.
Related: Features by User Role
https://help.teachme.jp/hc/en-us/articles/4403398967961
If "The specified manual was not found" is displayed
This is likely because the relevant manual was deleted by another user or on another screen during the duplication process.
Please check if the manual exists.
If "You have reached the upper limit of the number of video uploads. You cannot register any more videos." is displayed
You cannot duplicate a manual that contains videos, as it would exceed the upper limit of the number of videos that can be uploaded to the group.
Please check the number of videos uploaded to the group and delete unnecessary videos or add an option contract.
Related: Videos Uploaded Reached the Limit. What Can I Do?
https://help.teachme.jp/hc/en-us/articles/4402479700249
If the issue is not resolved by following the instructions in the article, or if a message or screen other than the above is displayed, please contact the support desk.
Related: Contact Guidelines
https://help.teachme.jp/hc/en-us/articles/4408344482201