QAD BI v3 – Tech Level 2 Certification - Part 2 > DEBUGGING
When building a data warehouse, it is nearly impossible to foresee all the possible permutations of data that might enter it. A data warehouse is driven completely by the data that enters it. There are frequently new scenarios that surface (especially with newer, less stable modules) that can cause a load to fail or cause the data in the warehouse to not be what it should be.