Manual Report Adjustment:  You can directly modify the EES W-2 report in Report Writer as a temporary fix:

• In Dynamics GP, go to Tools > Customize > Report Writer (while logged into the company database). Change the product to Employee E-mail Suite.
• Open each of the W-2 report layouts used by EES (e.g. W-2 Employee Copy B, Copy C, Copy 2, etc., listed under EES Reports). These are the templates for the PDF generation.
• Locate the text field displaying “OMB No. 1545-0008” on the form (typically in the header of the W-2 form). Edit this text to “OMB No. 1545-0029”.
• Save the modified reports. Grant security for the modified reports (via Alternate/Modified Forms and Reports in GP) so that GP uses your edited version for EES output.
• Test the output: Generate a sample E-mail W-2 to PDF and verify the OMB number now shows 1545-0029.

This manual method will correct the number on the forms the EES produces.