I am having the same problem with another Intuit product.  I am using Turbotax Home and Business quickemployerforms.intuit.com to file 1099's.  Have used for years with no problems.  They decided to change the software this year and it is not a good product.  Several clunky issues with the software just getting the information entered but I finally got it done.  I have used it for EIN companies submitting 1099's and sole proprietors using TIN submitting 1099's for years in the past.  This new software brought in all my data from the old software and nothing has changed.  I submitted for efiling both EIN and TIN submitters. All the EIN submissions were accepted.  All the TIN subsubmissions were rejected.  The email that I got was standard language like it was something to do with the individuals receiving the 1099's data was incorrect.  But that same data has been used for years in the past without issues.  Also they did not just reject one or two people, they rejected ALL 1099's submitted under the two sole proprietorships that were efiled.  I went in and checked the information for each submitter and each individual and the data is correct. 

Some of these individuals were also listed in EIN companies to get 1099's and they were accepted!!!!  But if that name was under a TIN company, they were rejected.  That tells me that there is a glitch in the new software where it is rejecting TIN submitters.  Sole Proprietors.  When I view the PDF of these 1099's under the sole proprietors,  they have the correct formatting. So that cannot be the issue.  I have reached out to Turbotax support and even though the support person really tried all her avenues to figure out what is the problem, she was unable to.  I can find no support articles out there for this 1099 issue with quickemployerintuit.com software.  I am stuck.  I efiled these back in the middle of January  but because the IRS doesn't accept anything until later in January you are hindered by the lack of time to get this problem solved and efile again!!  So thankfully my two companies that are TIN filers have less than 10 forms so I will have to resort to filing paper forms for them if this doesn't get solved.  I have sent numerous feedbacks on Turbotax 1099 efiling new software.  But my experience from years and years in Intuit products since 1995 shows that I don't see anything being fixed from my suggestions.  I don't know of anything else I can do.