I tend to find that when there are a number of common scenarios that can be applied yet someone more senior wants a "one size fits all" solution defined that often they are appears by a single document that covers the various scenarios so that each occurrence can be categorised by one of the defined solutions. When something requires a different solution then either it needs to be documented as an exception or it adds a newly defined category.

Of course, when specifying the defined applicable solution there might be technical details which need to be captured and applied that senior management neither need to know about nor care about.