> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gvb-staging.co.uk/llms.txt
> Use this file to discover all available pages before exploring further.

# Money, dates, and identifiers

> Interpret API values without losing precision.

Catalog product prices (`price`, `sale_price`, and related fields) are decimal values in major currency units. Purchased-voucher and redemption balance fields (`initial_balance`, `current_balance`, and `purchase_value`) are integers in minor units: `2500` with currency `GBP` means £25.00.

Timestamps use ISO-8601; date-only validity fields use `YYYY-MM-DD`. Fields documented as nullable may be JSON `null`. Identifiers are integers but should be treated as opaque stable keys rather than quantities.