# Frequently Asked Questions (FAQ)

### What is the source data for?

When using the WOZ value data and other data obtained from this API, it is important that the origin of the data, the value reference date and the moment of transfer from the API is always stated.

### How can I make sure to fetch live data?

Use *"cache": 0* to override 30 day database storage and fetch live data.

### What does the Index input query parameter do?

The *IndexedValue* in the output indexes the latest known WOZ value to the last month using the Kadaster index. This is a compute heavy function. Use *"index": 0* to remove this feature from the output. The *index* input is optional and is default 1.


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