Print/Preview prompt message "One or more margins are set outside the printable area of the page"

When print/preview a report/form then system prompt message "One or more margins are set outside the printable area of the page", but check the layout still inside the margin.

Step 1: Go to the report format designer, from the property grid, look for "Show Print Margin Warning" and set to No, this is to turn of the message since have checked and confirmed the layout is still inside the margin.