In an online job application, I filled out the "unique identifier" incorrectly. Will this affect me at all?

Basically, it was a field that asked for my "unique identifier", this being the first four digits of my SSN and my zip code, as part of the "eSignature" or whatever. Of course, stupid me writes in the LAST four digits instead of the first, and of course it doesn't let me go back and fix this. Will this at all affect my consideration by the company to whom I applied? I really seriously need a job and don't want to screw it up.