I want to know which element values need to be provided when creating a Campaign. The following page describes what elements are editable, but says nothing about their mandatoriness:
Thanks in advance.
I'd suggest you look at this documentation, instead of the one you have linked. This one displays the necessary elements for creation, and it gives a good example of what values to leave in the required elements that you want to skip (such as the Webpage Version and the Permission Reminder).
Let me know if you have any questions. Thanks!