What does the rejection SAY?  

None of us volunteers have the codes memorized...

There is a code search page for Lacerte:

https://proconnect.intuit.com/community/tkb/choosetemplatepage/board-id/diagnostics/search-before-po...

But the numbers are more typically longer than "901" and I tried "IND-901" and it isn't there. You can read about it here:

https://proconnect.intuit.com/community/community-basics/discussion/new-find-my-diagnostic-center-fo...

It's not a Lacerte diagnostic; it's an IRS reject code.

IND-901 indicates that the primary SSN on the return belongs to someone who SSA thinks died in a prior year.