I need to test my web site having 20 user roles and 40 permissions across different web pages, which Orthogonal array will be the closest to consider for this scenario i.e. two factors first with 20 levels and the second with 40 levels.
I understand the array may not completely match the scenario so how can I remove the values which may not be applicable.
Can I adapt the array for 40 factors and 3 levels each at https://www.york.ac.uk/depts/maths/tables/l81.htm, for my scenario?