CPS watches entries against this project’s own data and against margin targets. Nothing ever blocks your typing:
🟡 Yellow = worth a look — margin below target, or a value that differs from every peer line (possible typo). Review it, fix it, or Accept it.
🔴 Red = it’ll bite — a money-losing line or missing must-have. Red rows can’t enter the Master Invoice until fixed or explicitly Accepted.
The banner above the grid shows the reason and gives you Accept (goes on the record with your name) or Revise (jumps you to the cell).