If you don't know the Vendor's TIN, you can select "TIN not provided" under the Recipient’s TIN and proceed to file. Once you receive the correct TIN from the vendor, you can file a 1099/1098 correction.
If you don't know the Vendor's TIN, you can select "TIN not provided" under the Recipient’s TIN and proceed to file. Once you receive the correct TIN from the vendor, you can file a 1099/1098 correction.