# Migration to V4.1

## Plu

* **`RetailPrice`**: Property has been renamed to `RetailPriceIncludingVat`. As the name suggests, the retail price includes VAT now.
* `VatCategory`: The maximum value is changed from 5 to 10.

## PluPriceHistoryItem

* `RetailPrice`: Property has been renamed to `RetailPriceIncludingVat`. As the name suggests, the retail price includes VAT now.

## PluPurchaseType

* `VatCategory`: The maximum value is changed from 5 to 10.

## Vat

* `Category`: The maximum value is changed from 5 to 10.
* `Rate`: Data type is changed from decimal to nullable decimal, so value can be `null`as well.
* **`PlannedRateChange`**: New property `PlannedRateChange` of type `VatRateChange` has been added.
* **`LastModifiedAt`**: Date and time of last update. Enforced by API.

## VatIncome

* **`VatCategory`**:  Property has been removed.
* `VatRate`: Data type is changed from decimal to nullable decimal, so value can be `null`as well.

## VatInfo

* `Category`: The maximum value is changed from 5 to 10.
* `Rate`: Data type is changed from decimal to nullable decimal, so value can be `null`as well.


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