Which parameter of the validation method is used to ensure that the correct data is retrieved?

The parameter that is pivotal in ensuring that the correct data is retrieved is the KEYS parameter. In the context of the validation method, KEYS are essential because they serve as identifiers that access or reference specific records within the database. By utilizing KEYS, the validation process can pinpoint the exact data entries that need to be validated, thus preventing access to incorrect or unintended data. This precision in data retrieval is crucial for maintaining data integrity and ensuring that operations performed afterwards rely on accurate information.

In contrast, other parameters play different roles in the validation logic. The FAILED parameter typically indicates whether validation checks have failed, while the REPORTED parameter may refer to messages or logs related to the validation outcome. The VALUES parameter usually represents the actual data being processed or validated, but without the correct KEYS to pinpoint specific records, the VALUES provided could be misleading or incorrect.