You can't upload a Linkedin URL into the 'resume' field of Taleo/whatever applicant management system your company is using and have it work properly.
If you're dealing with a small company, you could try it - but clicking a link and opening up Linkedin (vs. reading an attachment) is one more mental step the hiring folks have to take to get from your email to your resume, which could matter in a not-hot economy.
If you're dealing with a large company, its system probably needs a resume it can store in its management system and scan for keywords/indexing - in which case the HR folks would have to copy-paste your Linkedin profile in and fix it up, which they probably won't do. Plus, you're ignoring one of the first things they've asked you to do, which isn't a great start.
If you're dealing with a small company, you could try it - but clicking a link and opening up Linkedin (vs. reading an attachment) is one more mental step the hiring folks have to take to get from your email to your resume, which could matter in a not-hot economy.
If you're dealing with a large company, its system probably needs a resume it can store in its management system and scan for keywords/indexing - in which case the HR folks would have to copy-paste your Linkedin profile in and fix it up, which they probably won't do. Plus, you're ignoring one of the first things they've asked you to do, which isn't a great start.