E-File rejected due to Control Number

[sbubalo44]

I'm trying to e-file my taxes but it says I can't because the Control Number on my W-2 is less than 2 alpha or numeric characters. It's only says "C". But I've e-filed every year in the past and my W-2 has always just showed "C". How do I fix this so I can e-file? Can I just put in any letters and move on? This is literally the last step for me to finish. 

[Mike9241]

delete all info in box d

[sbubalo44]

Will that let me e-file still? The wording makes it sound like I won't be able to if I delete everything. 

[DoninGA]

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@sbubalo44 wrote:

Will that let me e-file still? The wording makes it sound like I won't be able to if I delete everything. 

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The box D Control Number is not required to e-file your tax returns.  

[sbubalo44]

Thank you both for the help! I got rid of the letter and it went through. Guess I just misunderstood the note on the error that was coming up.