How to backup?

For users without root adb backup/restore is the only way to backup app+data.
Would you please be so kind to allow that in manifest?
If not - is there any special reason not to do so?
Thank you.

Start by checking the Android manifest configuration related to backup and restore. Confirm whether enabling it permits backup of the app and its data for users without root, and review the existing issue discussion for security constraints. Done means the requested backup behavior is enabled or the manifest limitation is documented with its reason.

Written by the indexing model from the issue text.