Possible causes and solutions are as follows.
Some changes have been made to the manual
There is a possibility that some changes have been made to the manual, such as an approval request already being submitted from another device.
Please check the following and try submitting the approval request again.
Sync the manual
If there is a possibility that the manual has also been edited in the web browser version, please sync the manual to incorporate the changes.
▼ Learn about "Unsynced" in the mobile app
https://help.teachme.jp/hc/en-us/articles/12095601263769
Update the app
▼ Where can I update the app?
https://help.teachme.jp/hc/en-us/articles/900006442623
The character count on the cover or steps exceeds the limit
If the character count exceeds the limit, you can save as a draft, but you cannot submit an approval request.
Please check the following and try submitting the approval request again.
Check the character count
If the character count on the cover or steps exceeds the character limit displayed on the editing screen, please adjust the content accordingly.
Related:
What is the maximum number of characters that can be entered in titles and descriptions?
https://help.teachme.jp/hc/en-us/articles/900006444683
How are characters counted?
https://help.teachme.jp/hc/en-us/articles/10268480807961
If the above methods do not resolve the issue
We apologize for the inconvenience. Please contact our support team at support@teachme.jp.