ASCE provides errata and commentary updates for free on their website. You can legally download these without owning the main standard. They clarify mistakes but do not replace the full document.
Failure to meet local building department requirements. Asce 7-16 Pdf Free Download
For professional practice, it is highly recommended to use a licensed, official copy to ensure accuracy and access to the latest errata: ASCE Bookstore : The primary source for both digital (PDF) and print Academia.edu ASCE AMPLIFY ASCE provides errata and commentary updates for free