Including base productId in bundle productIds list

Question

When listing the productIds for a bundle, should the base productId be included?

For example, when calling /banking/products/Example123, omitting the base productId from the bundle might result in a response such as the following:

{
    "productId": "Example123",
    "effectiveFrom": "string",
    "effectiveTo": "string",
    "lastUpdated": "string",
    "productCategory": "BUSINESS_LOANS",
    "name": "string",
    "description": "string",
    "brand": "string",
    "isTailored": true,
    "bundles": [
        {
            "name": "string",
            "description": "string",
            "additionalInfo": "string",
            "additionalInfoUri": "string",
            "productIds": [
                "ExampleABC",
                "ExampleXYZ"
                ]
        }
    ]    
}

What is the preferred behaviour?

Answer

The Consumer Data Standards (CDS) are silent, so both interpretations are valid. The CDS do not force Data Holders (DHs) to include the current product's productId in the bundle array, but do not preclude including the current product's productId in the array.

As the client can infer that the current product is included in the bundle, including the base productId is redundant. The client can add the current productId to the bundle if preferred.

If you see this as requiring further standardisation, the DSB would welcome a change request to that effect.

See:

• CDS Get Products
• Creating a Change Request