The Colorado of Taxation/Revenue etc. is asking you to make a correction and on your CO Tax Return.
Solution: Please sign in to your eFile.com account now and review the messages on the right side page.
1. Sign in: https://mytaxes.efile.com/1040/SignIn/
2. Then click on State Taxes on the left and on the right side the small blue link: I'd like to see the forms I've filled out or search for a form then select the state in question and edit the form.
3. Click on Colorado and the the down arrow on the right and review your state forms.
The CO tax withheld amount claim must be confirmed by the state income tax amounts as shown on the CO withholding statement. If you can't make this correction, please mail in your CO return or contact the state prior.
Find the CO mailing address here at the bottom of this page:
https://www.efile.com/colorado-tax-payments/
If you have questions, please contact us as soon as possible so we can assist you with your Tax Return.