SummaInstall

Overview

The node named "Summa" is designed to interact with the Summa API (version indicated dynamically). It supports multiple resources and operations, including the "Sim" resource with an operation called "HLR Volatile Data." This particular operation likely retrieves volatile data related to a SIM card's Home Location Register (HLR) information, which can be useful in telecom scenarios such as subscriber management, SIM status checks, or network troubleshooting.

Practical examples of using this node include:

• Querying real-time HLR data for a given SIM card identified by its ICC ID.
• Integrating telecom backend systems to automate SIM lifecycle management.
• Validating SIM status before provisioning or service activation.

Properties

Output

The output of the node will be JSON data representing the HLR volatile data associated with the specified SIM card. This typically includes dynamic subscriber information stored in the HLR, such as current location, service status, or temporary parameters relevant to the SIM's network registration state.

If the node supports binary data output, it would generally relate to any raw data or files returned by the API, but based on the provided code and context, the primary output is structured JSON data.

Dependencies

• Requires an active connection to the Summa API via an API key credential configured in n8n.
• Uses internal helper classes for HTTP requests, state management, and operation resolution.
• No additional external services beyond the Summa API are indicated.

Troubleshooting

• Missing or invalid ICC ID: Since the ICC ID is required, ensure it is correctly provided; otherwise, the node may fail to retrieve data.
• API authentication errors: If the API key credential is missing, invalid, or expired, the node will not connect successfully.
• Network or API downtime: Connectivity issues or Summa API outages will cause execution failures.
• Unexpected response structure: If the API changes its response format, the node might not parse the output correctly.

To resolve these issues:

• Verify the ICC ID input is correct and non-empty.
• Check and update the API key credential in n8n settings.
• Confirm network connectivity and Summa API availability.
• Review error messages for specific API response codes and adjust inputs accordingly.

Links and References

• Summa API Documentation (Replace with actual URL if available)
• n8n Documentation on Creating Custom Nodes
• General Telecom HLR Concepts: Wikipedia - Home Location Register