This doesn't fix the issue for a MN employee.  

https://www.atxcommunity.com/topic/14415-please-provide-your-states-ein-and-address-that-would-be-sh...

The posting is old and some of the numbers have been changed, but it is a place to get a good guess from. 

@LeannaA the burden really belongs with the client to get a complete W-2 from their employer. We can perform only so much magic before we ...

Thanks for the response. 

MN Revenue says to put seven 9s in the field.

Thanks for sharing the info!