Am I required to print the SSN's of the partners on their K-1's in a partnership or should I be able to mask the SSN.  

Obviously it makes sense to show the SSN's to the individual partners so an error can be corrected.  But, should the Tax Matters Partner be able to see the SSNs as well?

I just think a simple option to mask the SSN's should be available when you wish to print a return.