Addendum: By the way, if you have a joint return, then be sure to use the primary taxpayer's SSN in that tool. Using the wrong one can also generate a 9001 code.
While a 9001 code later in filing season is often a problem between checking with primary/secondary SSN, right now problems with WMR are most likely due to WMR not being ready for prime time yet for 2018 filing season. So as I mentioned above, it may just be due to odd behavior with WMR and how it handles accepted returns before processing officially begins..
