SAP Message S>027 - Conversion error in a template (see long text)

Diagnosis
A conversion error has occurred in one of the HTML templates that youare copying. The template probably contains characters that cannot bedisplayed in the system codepage.
Service: &V1&
Theme: &V2&
Name: &V3&
Screen: &V4&

Procedure
Either correct the template yourself or contact the person responsible.