A supplier manager is building a qualification template for a commodity where suppliers must provide a tax identification number in a fixed national format. The manager wants the system to reject submissions that do not match the required pattern before the questionnaire reaches an internal reviewer. Which configuration should the supplier manager apply?
Regular expression validation in SAP Ariba Supplier Management questionnaire templates checks the entered value against a defined pattern at submission time. Configuring a regex that matches the national tax ID format causes non-conforming entries to be rejected before the response is routed to an internal reviewer, satisfying the requirement to block invalid submissions early.
Why this answer
Format enforcement on typed questionnaire answers is achieved with regular expression validation, which evaluates the supplier's entry against a pattern at the moment of submission. When the pattern does not match, the response is blocked, so malformed tax identification numbers never reach an internal reviewer and data quality is enforced at the source.
Exam trap
The trap here is confusing data collection controls such as required fields or attachments with actual format validation, which only a regular expression rule provides.