The document discusses common mistakes that undermine strategic communication plans. It identifies four main mistakes: 1) The plan fails to tie directly to business performance and growth, instead focusing on increasing brand visibility or acting as a news distribution tool. 2) The plan is created with no external input or research, excluding important trends, disruptors, customer insights, and industry changes. 3) Guidelines and parameters for graphic quality, content consistency, and branding across channels are either nonexistent or too vague. 4) The plan is kept private and not shared company-wide, undermining coordinated internal and external messaging.