How do I submit a question about the new 1099-K filing requirement to the Department of Revenue?

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• I work for a software vendor and have multiple clients who may need the 1099-K. Where can I find the electronic filing specifications that you require for the 1099-K? Is it possible to obtain the specifications without registering on the portal?
• I prepare IRS Form 1099s and Form W-2s to provide to the IRS and recipients of different types of income.  Do I have to submit a copy of these 1099 forms to the State of Tennessee?  
• Do reporting entities that are required to file a 1099-K Information Return with the IRS also have to file that return with the Tennessee Department of Revenue?
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• What does “TIN” mean on the Department of Revenue registration page for filing 1099-K informational returns?