Unique QRcode coupon assignment and validation for Lead Generation with SuiteCRM

This workflow is designed to manage the assignment and validation of unique QR code coupons within a lead generation system with SuiteCRM. How it Works This workflow automates the process of assigning unique QR code coupons to leads generated through a form submission, ensuring no duplicates are created, and validating the usage of coupons. Here's how it operates: Webhook Trigger: The workflow starts with a Webhook node that listens for incoming requests containing QR code data. A Set coupon node extracts the QR code value from the request parameters. Validation of QR Code: An If node checks if the QR code exists in the incoming data. If it does, the process proceeds; otherwise, a "No coupon

Help me set up the n8n workflow "Unique QRcode coupon assignment and validation for Lead Generation with SuiteCRM" (https://n8n.io/workflows/2899). It uses: Send Email, Google Sheets, HTTP Request. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.