Writing_on_the_wall -

A "solid report" functioning as "writing on the wall" refers to a well-researched, credible analysis that provides undeniable evidence of an impending crisis or failure. These analyses are commonly seen in economic forecasts, corporate earnings, and policy reviews, signaling necessary, yet often difficult, future changes. For more details, visit Plain English . a solid report | Meaning, Grammar Guide & Usage Examples

It can be used to describe a document, presentation, or assessment that is well-researched, thorough, and accurate. For example, " ludwig.guru

Writing is on the wall | What it means in English - Plain English