Is there a way to attach documents (.pdfs, emails, etc.) to transfer orders without customizing?

Is there a way to attach documents (.pdfs, emails, etc.) to transfer orders without customizing?
Hi, Unfortunately, only Links and Notes can be added by the standard, so if you don't want to customize, you can put the file in Sharepoint or Onedrive and put the link in Links.
Hope this can give you some hints.
Thanks.
ZHU