Below are the requirements and different options to build a task launch url.
Required task identifiers
The launch url must have one of the following supported query params to identify which task to launch:
...
Note: They are case insensitive (e.g. busObj or BusObj or busobj are supported).
Launch URL & cookies
When launching OneList via a launch url, the user will be prompted with below options/actions (see screenshot below):
...
The user has the option to clear or change his/her previous selection via OneList > Settings > Default Settings > Default launch action…
...
Sample launch url
...