All Worldpay codes
WORLDPAY · REFUSAL CODE
Worldpay635
Setting error in the "Acquirer Institution Identification Code" message element.
Worldpay saysIntegration issue
635Setting error in the "Acquirer Institution Identification Code" message element.
What it means
Invalid request data
A field in the request has a wrong value or format.
What to do
Compare the request with the provider's API reference. The response detail usually names the field.
Don't retry as-isWho can fix it: You, the merchant
Yuno response codeINVALID_PARAMETERS
Reference only. Codes and descriptions come from each provider's public documentation. The Yuno response code is a reference mapping and does not guarantee how a specific transaction is processed.