Actions6
Overview
This node integrates with the Letter Xpress API to manage postal and email printing services. It supports operations such as sending letters, retrieving account balance, fetching lists of print jobs, email jobs, transactions, invoices, and retrieving a single invoice by ID.
The "Rechnungen Abrufen" (Get Invoices) operation specifically retrieves a paginated list of invoices from the Letter Xpress account. This is useful for automating financial workflows, bookkeeping, or integrating invoice data into other systems.
Practical examples:
- Automatically fetch recent invoices for accounting software synchronization.
- Monitor invoice issuance and status in real-time.
- Generate reports based on invoice data retrieved via the API.
Properties
| Name | Meaning |
|---|---|
| Seite | Page number for pagination when retrieving invoices. Default is 1. |
Output
The node outputs JSON data representing the response from the Letter Xpress API for the requested operation.
For the "Rechnungen Abrufen" operation, the output JSON contains a list of invoices with their details as provided by the API. The exact structure depends on the API response but typically includes invoice metadata such as IDs, dates, amounts, and statuses.
No binary data output is produced by this operation.
Dependencies
- Requires an API key credential for authenticating with the Letter Xpress API.
- The node makes HTTP requests to
https://api.letterxpress.de. - Proper configuration of the API credentials within n8n is necessary.
Troubleshooting
Common issues:
- Invalid or missing API credentials will cause authentication errors.
- Requesting pages beyond available data may return empty results.
- Network connectivity problems can lead to request failures.
Error messages:
- Errors thrown by the node include detailed messages from the API or network layer.
- If the operation is not supported, the node throws an error indicating so.
- To handle intermittent failures, enable "Continue On Fail" to avoid stopping the workflow.
Resolution tips:
- Verify API credentials are correctly set up.
- Check the page number parameter to ensure it is within valid range.
- Ensure network access to the Letter Xpress API endpoint.
Links and References
- Letter Xpress API Documentation (official API docs)
- n8n documentation on HTTP Request Node for understanding API calls in workflows