Parse Invoice XML via Webhook & Update GoHighLevel Deals

Automatically Parse Invoice XML and Update GoHighLevel Deals

Send an invoice XML file to an n8n webhook and this workflow will parse it into structured JSON, then automatically search and update the matching GoHighLevel (LeadConnector) opportunity with the invoiced amount, pipeline/stage, and key custom field values.

What this workflow does

• Receives invoice XML via webhook: The workflow listens for a POST request to the n8n webhook URL at the invoice-webhook path, including the invoice XML as a binary file.
• Extracts and decodes XML content: It pulls the binary XML, decodes it into an XML string, and converts it into a structured JSON object.
• Processes each invoice record: For every invoice in the parsed payload, it iterates through the records.
• Finds the right GoHighLevel opportunity: It calls the GoHighLevel (LeadConnector) Opportunities Search API to locate an opportunity by order reference (configured as a test query placeholder initially).
• Updates the deal in GoHighLevel: Once matched, it updates the opportunity with:
  • Monetary value (invoiced amount)
  • Pipeline and pipeline stage IDs
  • Custom fields such as invoiced amount and transaction date

Use cases

• ERP/Warehouse-to-CRM sync: Automatically reflect invoice totals and transaction dates in GoHighLevel deals.
• Invoice-driven sales tracking: Keep pipeline stage and invoiced value current as invoices are generated.
• Back-office automation: Reduce manual deal updates by turning invoice XML into real CRM data.

Technical details

• n8n webhook node to accept uploaded binary invoice XML files.
• XML parsing and conversion to JSON (via n8n XML-related nodes).
• GoHighLevel (LeadConnector) API calls using HTTP requests with your Private Integration token (replace YOUR_GHL_API_TOKEN).
• Opportunity search + update for pipeline/stage and custom fields (IDs configurable in the request body).
• Batch-safe processing using split-in-batches and HTTP request logic.
• Configurable placeholders for YOUR_GHL_LOCATION_ID, YOUR_GHL_PIPELINE_ID, YOUR_GHL_PIPELINE_STAGE_ID, and custom field IDs.

Best of all: you can test with a sample XML invoice, confirm the parsing results, and then activate the workflow for ongoing invoice-to-deal updates.