"Total adjustment to gain or (loss)" not fit neither box 1f or 1g in my Form 1099-B

[xuezheguo]

I'm using Turbotax Premier, and choose "I'll enter a summary for each sales category"

I entered Total proceeds (sum of all 1d) and Total cost basis (sum of all 1e) then I select Box A - Short term covered from the dropdown, then I checked "I need to enter amounts from box 1f, box 1g, or other adjustments" then it shows up

Total adjustments to gain or (loss) 

List all adjustment codes.

Here comes my question:

   When I put box 1g (Wash Sale Loss Disallowed) value in my Form 1099-B into Total adjustments to gain or (loss), and leave List all adjustment codes as blank since I could not find any adjustment code in my From 1099-B. When click Done, it gets highlighted with message: Please fill in or correct the highlighted info below. What is the correct way to fill up this section? 

[fanfare]

The code required for Wash sale loss disallowed is "W".

Type in a "W".