My feedback is consistent with what everyone else has told you, but with a couple of additional points worth mentioning...
It's typically going to be fine if you complete the survey and submit the HIT using only your worker ID, then promptly contact the requester after submitting the HIT (although it's not always necessary to email the requester). I think I've done this now at least 200 times and never had a problem. Even if the HIT clearly states "Do not submit your worker ID" I've done it anyway and the HITs have always approved.
There are 2 ways you can be even more certain that it won't be an issue to submit your worker ID.
- If at any point during the survey itself you were asked to input your worker ID, then your golden. The requesters can easily verify that the HIT submitted corresponds to a completed survey. In this case, I wouldn't even bother messaging the requester.
- Look at the URL of the survey. Within the long string of numbers and letters, look for your worker ID, and if you see it they you are okay. Many new workers don't realize this, but the link to the survey (that you click on in the HIT window) often opens the survey and appends your worker ID to the URL of the survey, which allows the requester for track worker IDs.
Finally, just be cautious... Some requesters add the completion code to the second to last page in an inconspicuous place. On surveys, I've gotten in the habit of copying/pasting the debriefing page contents into a Word doc before I click the next button just in case I overlook a survey code.