Schedule E error (after I got a No Errors message and paid for e-File) TurboTax will not file due to 'Line 1 please use separate columns to enter rental...'?

It's possible you reported both rent and royalty income using the same property address. Although you should have two Schedule E worksheets, they will be combined on Schedule E unless you have different property descriptions.

If you're using TurboTax for Desktop:

1. Go to Tools >> Forms and find "Schedule E Wks (property address)." 
2. Click to open in the large window. 
3. At the top of the form under General Information, add either "Rental" or "Royalty" to the property description line. 
4. Repeat for the other Sch E Wks. 
5. Now open Schedule E, p1 and confirm you have two entries on Line 1 with the same address. 
6. One should have a "1" on Line 1B and the other should be "6."

In TurboTax Online, you will need to revisit the Rental/Royalty section and edit the property description for your two properties.

1. Go to Federal >> Wages & Income >> Rental Properties and Royalties (click Add/Edit.
2. Click Edit (pencil icon) beside the rental property.
3. Click the pencil icon under the House in the page header (Rental Property Info).
4. Under General Info, click Edit under the name.
5. Add "Rental" to the end of the nickname and continue.
6. Continue back to the list of properties and repeat editing the nickname to add "Royalty."