Hi,

Some solution is provided in the below link:

https://collaborate.pega.com/discussion/wrap-column-header-data-report-definition

"This can be accomplished by going to the Application Skin and choosing the Trees & Grids component.  From there you can modify and exisiting style or clone one.  To center align the text select the Rows tab and add the Text-Align Center under Additional Styles for both Odd and Even Rows.."

Hello John,

Thanks for posting queries in PDN.

Please try to check the wrap text checkbox in the header label properties.Please see the attachment for your reference.

I hope this may help you.

Thanks & Regards,

Durga