To disable upsell activity in Odoo v16 timesheets, you can follow these steps:

1.Go to Settings>Technical>Automation>Scheduled Actions.
2.Search for Upsell Activity and click on it.
3.Click on Edit and uncheck the Active checkbox.
4.Click on Save.

This should disable upsell activity in Odoo v16 timesheets. Let me know if you have any other questions or if there's anything else I can help you with!

Activate the developer mode and->go to settings->technical->activity types->open order upsell-> action->archive

Any Updates on this, especially for Version 18?

I have archived order upsell activity and I still get sales with order upsell, upselling opportunity. 

I wish it would go away

@ricardo Gross

there is no "order upsell" activity in my activity types. Still this actions is performed every time a tasks get overtime on the timesheets.

how can i resolve this?

hello, do you found a solution for that?

///@denny: no schedule action for that exists

///@ricardo: thx, i archived that activty, but it seems, that doesnt deactivate the Odoo bot to create sucht activites...