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Interact with mittwald mStudio API

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Overview

This node interacts with the mittwald mStudio API to retrieve an access token for a specific invoice file related to a contract. It is useful when you need to programmatically obtain secure access to invoice files stored or managed within the mittwald system, enabling further processing, downloading, or integration with other workflows.

A practical example would be automating the retrieval of invoice documents for customers in an accounting workflow, where after getting the access token, the file can be downloaded or linked for archival or review purposes.

Properties

Name Meaning
Customer Id The unique identifier of the customer whose invoice file access token is being requested.
Invoice Id The unique identifier of the invoice for which the file access token is needed.

Output

The node outputs JSON data containing the access token for the requested invoice file. This token typically allows authorized access to download or view the invoice document securely.

If the node supports binary data output (not explicitly shown in the provided code), it would represent the actual invoice file content or a link to it. However, based on the static analysis, the primary output is the JSON response with the access token.

Dependencies

  • Requires an API key credential for authentication with the mittwald mStudio API.
  • Depends on the external mittwald mStudio API endpoint at https://api.mittwald.de.
  • Uses the @devlikeapro/n8n-openapi-node package for OpenAPI-based request handling.
  • Requires proper configuration of the API credentials within n8n to authorize requests.

Troubleshooting

  • Missing or invalid API credentials: Ensure that the API key credential is correctly configured and has sufficient permissions.
  • Invalid Customer Id or Invoice Id: Verify that the provided IDs exist and are correct; otherwise, the API may return errors or empty responses.
  • Network or API endpoint issues: Check connectivity to https://api.mittwald.de and confirm the API service status.
  • Unexpected API response format: If the API changes, the node might fail to parse the response correctly; updating the node or its OpenAPI specification may be necessary.

Links and References

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