Text, Artwork, or other Elements too Close to Trim
What it means: Any text or other element (non-bleed artwork or image) on the page that is within 1/8" of any trimmed edge of the page is considered too close to trim.
Problems caused: These elements are close enough that they are in danger of being trimmed off due to normal and acceptable variations throughout the printing and binding process.
How to fix: Move or re size the element in question to achieve a minimum 1/8" clearance between the element and the edge of the document.