Payor Name-1 on the D-40WH comes from
your first
federal W-2 or 1099-MISC. The official DC form has only 13 spaces on the
form (the TurboTax version might have more - I haven't seen it).
The first thing I would do is edit your first W-2 and shorten the
Employer's Name to less than 20 characters. Then do the Review again and see if the error goes away. If so, you
have found the problem; if the error persists, then either shorten the name a few more characters, or try the second W-2 (if one), just in case the order
of the Payors in DC isn't the same order as the W-2s on the federal return.
Note that other users have reported success with names no longer than 20 characters.
Note that shortening the name of the employer on the
W-2 won't be a problem, if you've made sure that the employer's EIN on
the W-2 is correctly entered.
