Have you filed the W-2 form already? Here’s an article that’ll help you amend your W-2 form:

https://community.intuit.com/articles/1436654

Resolution for '2016 W2 issue: 'Amend 2016 W2 in Quickbooks' available: Yes.

The 2016 W2 issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the 2016 W2 issue yourself by looking for a resolution described in the article. If it is a complex 2016 W2 issue or you are unable to solve the issue, you may contact us by clicking here or by using other 2016 W2 support options.

For more information about resolving issues related to 2016 W2 in Quickbooks/QBO or to get support for the issue 'Amend 2016 W2 in Quickbooks', click the link below: