|                                  | Region: US                                | Region: EU                                |
|----------------------------------|-------------------------------------------|-------------------------------------------|
| Valid US API KEY and MERCHANT ID | Valid: true                               | Valid: false                              |
| Valid EU API KEY and MERCHANT ID | Valid: false                              | Valid: true                               |
| EU: Valid ID & Invalid Key       | Valid: false                              | Valid: false && Signature does not match. |
| US: Valid ID & Invalid Key       | Valid: false && Signature does not match. | Valid: false                              |
| Invalid ID                       | Valid: false                              | Valid: false                              |