What is Cross-Validation?
Cross-validation (also known as cross-segment validation) controls the combinations of values you can create when you enter values for key flexfields. A cross-validation rule defines whether a value of a particular segment can be combined with specific values of other segments. Cross-validation is different from segment validation, which controls the values you can enter for a particular segment.
You use cross-validation rules to prevent the creation of combinations that should never exist (combinations with values that should not coexist in the same combination). For example, if your organization manufactures both computer equipment and vehicles such as trucks, you might want to prevent the creation of “hybrid” part numbers for objects such as “truck keyboards” or “CPU headlights”.
For example, suppose you have an Accounting Flexfield where you have a Company or Organization segment with two possible values, 01 and 02. You also have a Natural Account segment, with many possible values, but your company policy requires that Company or Organization 01 uses the natural account values 001 to 499 and Company or Organization 02 uses the natural account values 500 to 999. You can create cross-validation rules to ensure that users cannot create a GL account with combinations of values such as 02-342 or 01-750, for example.