My W-2 Box-D has no control number. i leave it blank and it says a value is required. i can't continue without putting something in that box.

[MarilynG1]

If you get errors when attempting to e-file with an empty box D, just enter any number in this format: 5 digits, space, 5 digits (for example 12345 67890). The IRS doesn't care what's in box D.

If you get errors when attempting to import your W-2 with an empty box D, select Skip import and manually enter your W-2. Here's How to Manually Enter a W-2.