The budget API of Twinfield seems to be returning incorrect results. For more information see:
- Twinfield Budgetbedragen 0 (Dutch)
- Twinfield.Views.ProfitAndLossBudgets geeft zelfde data voor alle companies (Dutch)
There are currently no plans to perform further investigation in this issue covered by support, since it seems to be an issue in the source.
In hindsight, this API should not have been included in the driver given the amount of strange issues.