An approved screen image fails the print brief

A fictional agency prepares a brochure from a small raster image that looked acceptable in a slide deck. The production manager assumes that changing its metadata to three hundred pixels per inch adds missing detail and that a named spot color guarantees identical appearance on every paper. The client approves one digital proof, but a later file contains revised text and an unapproved photograph. The print supplier has not yet confirmed dimensions, bleed, finishing or proof conditions. No actual press is operated. Identify why the existing approval and screen preview do not establish a correct final deliverable, and propose an evidence-based handoff that separates content authority, image suitability, color expectations and the printer’s actual production requirements.