When something goes wrong in your IBM Cognos environment, it's important to immediately notify the team of people in charge of fixing issues. If an issue goes undetected the following unwanted scenarios can happen:
IBM Cognos and Motio Best Practices Blog
Most Cognos developers have been confronted with this situation before: A report runs perfectly fine in the Cognos Development or Test environment, but has some sort of issue in the Production Cognos environment. This scenario generally results in the Cognos team asking the question, "What are the differences in this report between the Cognos environment where it works (Development/QA) and the Cognos environment where it has an issue (Production)?".