Can somene advise where I can find box d -control number

[DoninGA]

The box d Control Number on a W-2 is not needed to file your tax return.  If you are receiving an error for box d then delete the W-2 and re-enter manually and do not enter anything in box d.

[VolvoGirl]

Should be on the left side under the Employer name and address.    W2 box d Control number is not needed.  See

https://ttlc.intuit.com/community/forms/help/i-have-no-box-d-or-control-number-on-my-w-2/00/26469

The control number in box d is not required by the IRS - it is used by your employer.  As a result, if it causing you trouble, just delete it.  If it is not causing you trouble, then leave it in - it won't matter.

[taxlady28]

Some companies use Box D for a number.  If it is blank on your W-2, then leave it blank in TurboTax.  The only reason to use it is to download your W-2.