Recommended processors for testing
Last updated: June 24, 2026
Quick answer
TSYS or Elavon — they behave most like Worldpay in UAT. Switching the test config often clears processor-specific errors.
Solution
Use TSYS or Elavon for testing — they behave most like Worldpay in UAT. Processor-specific errors often clear by switching the test configuration. Simulators require valid credentials and a valid test VAR sheet.