NABCEP looks at the intent behind documentation, not just the specific form it takes. The two most common documentation requirements are permits and inspections.
If you're unsure whether your documentation will work, email NABCEP at info@nabcep.org before you submit your application. You can attach the documents you're considering and they'll review them informally and let you know. There's no limit on how many documents you can submit or how long the documentation step takes to complete.