Processor Details
Integration Guide
1
Open Nuvei Merchant Portal
Log in to the Nuvei Merchant Portal and ensure your merchant account is active.
2
Collect credentials
Obtain the following credentials from Nuvei:
- Merchant ID
- Merchant Site ID
- Secret Key
3
Add integration in PayNext
In Dashboard → Integrations, click Add new integration → Nuvei → Connect
4
Enter credentials
- Name: Label for this connection (e.g., “Nuvei US”)
- Merchant ID
- Merchant Site ID
- Secret Key
5
Save
Click Connect to complete the integration
Metadata Mapping
Nuvei supports passing merchant-defined metadata using thecustomData fields in requests. These can be used for reconciliation and tracking.
Some metadata fields may require enablement or configuration on the Nuvei account. Contact Nuvei support if fields are not returned in responses.
Example Usage:
Update Customer Metadata