Change:
    | AddAddressChange
    | AddAssetChange
    | AddAssociateChange
    | AddAttributeDefinitionChange
    | AddBillingAddressIdChange
    | AddChannelRolesChange
    | AddCustomLineItemChange
    | AddDeliveryChange
    | AddDiscountCodeChange
    | AddEnumValueChange
    | AddExternalImageChange
    | AddFieldDefinitionChange
    | AddInheritedAssociateChange
    | AddInterfaceInteractionChange
    | AddItemShippingAddressesChange
    | AddLocalizedEnumValueChange
    | AddLocationChange
    | AddOrderLineItemChange
    | AddParcelToDeliveryChange
    | AddPaymentChange
    | AddPlainEnumValueChange
    | AddPriceChange
    | AddProductChange
    | AddProductSelectionChange
    | AddPropertyChange
    | AddReturnInfoChange
    | AddShippingAddressIdChange
    | AddShoppingListLineItemChange
    | AddStateRolesChange
    | AddTaxRateChange
    | AddTextLineItemChange
    | AddToCategoryChange
    | AddTransactionChange
    | AddVariantChange
    | ChangeAddressChange
    | ChangeAmountAuthorizedChange
    | ChangeAmountPlannedChange
    | ChangeAssetNameChange
    | ChangeAssetOrderChange
    | ChangeAssociateChange
    | ChangeAssociateModeChange
    | ChangeAttributeConstraintChange
    | ChangeAttributeOrderByNameChange
    | ChangeBuyerAssignableChange
    | ChangeCartDiscountsChange
    | ChangeCartPredicateChange
    | ChangeCustomLineItemQuantityChange
    | ChangeDescriptionChange
    | ChangeEmailChange
    | ChangeEnumValueLabelChange
    | ChangeEnumValueOrderChange
    | ChangeFieldDefinitionOrderChange
    | ChangeGroupsChange
    | ChangeInheritedAssociateChange
    | ChangeInitialChange
    | ChangeInputHintChange
    | ChangeIsActiveChange
    | ChangeIsSearchableChange
    | ChangeKeyChange
    | ChangeLabelChange
    | ChangeLineItemQuantityChange
    | ChangeLocalizedDescriptionChange
    | ChangeLocalizedEnumValueLabelChange
    | ChangeLocalizedEnumValueOrderChange
    | ChangeLocalizedNameChange
    | ChangeMasterVariantChange
    | ChangeNameChange
    | ChangeOrderHintChange
    | ChangeOrderStateChange
    | ChangeParentChange
    | ChangeParentUnitChange
    | ChangePaymentStateChange
    | ChangePlainEnumValueLabelChange
    | ChangePlainEnumValueOrderChange
    | ChangePredicateChange
    | ChangePriceChange
    | ChangeProductSelectionActiveChange
    | ChangeQuantityChange
    | ChangeQuoteRequestStateChange
    | ChangeQuoteStateChange
    | ChangeRequiresDiscountCodeChange
    | ChangeReviewRatingStatisticsChange
    | ChangeShipmentStateChange
    | ChangeShoppingListLineItemQuantityChange
    | ChangeShoppingListLineItemsOrderChange
    | ChangeSlugChange
    | ChangeSortOrderChange
    | ChangeStackingModeChange
    | ChangeStagedQuoteStateChange
    | ChangeStateTypeChange
    | ChangeStatusChange
    | ChangeTargetChange
    | ChangeTaxCalculationModeChange
    | ChangeTaxModeChange
    | ChangeTaxRoundingModeChange
    | ChangeTextLineItemNameChange
    | ChangeTextLineItemQuantityChange
    | ChangeTextLineItemsOrderChange
    | ChangeTransactionInteractionIdChange
    | ChangeTransactionStateChange
    | ChangeTransactionTimestampChange
    | ChangeValueChange
    | MoveImageToPositionChange
    | PublishChange
    | RemoveAddressChange
    | RemoveAssetChange
    | RemoveAssociateChange
    | RemoveAttributeDefinitionChange
    | RemoveBillingAddressIdChange
    | RemoveChannelRolesChange
    | RemoveCustomLineItemChange
    | RemoveDeliveryItemsChange
    | RemoveDiscountCodeChange
    | RemoveEnumValuesChange
    | RemoveFieldDefinitionChange
    | RemoveFromCategoryChange
    | RemoveImageChange
    | RemoveInheritedAssociateChange
    | RemoveItemShippingAddressesChange
    | RemoveLocalizedEnumValuesChange
    | RemoveLocationChange
    | RemoveOrderLineItemChange
    | RemoveParcelFromDeliveryChange
    | RemovePaymentChange
    | RemovePriceChange
    | RemoveProductChange
    | RemoveProductSelectionChange
    | RemovePropertyChange
    | RemoveShippingAddressIdChange
    | RemoveShoppingListLineItemChange
    | RemoveStateRolesChange
    | RemoveTaxRateChange
    | RemoveTextLineItemChange
    | RemoveVariantChange
    | RequestQuoteRenegotiationChange
    | SetAddressChange
    | SetAddressCustomFieldChange
    | SetAddressCustomTypeChange
    | SetAnonymousIdChange
    | SetApplicationVersionChange
    | SetAssetCustomFieldChange
    | SetAssetCustomTypeChange
    | SetAssetDescriptionChange
    | SetAssetKeyChange
    | SetAssetSourcesChange
    | SetAssetTagsChange
    | SetAttributeChange
    | SetAuthenticationModeChange
    | SetAuthorNameChange
    | SetBillingAddressChange
    | SetCartPredicateChange
    | SetCategoryOrderHintChange
    | SetChannelRolesChange
    | SetCompanyNameChange
    | SetContactEmailChange
    | SetCountriesChange
    | SetCountryChange
    | SetCustomFieldChange
    | SetCustomLineItemCustomFieldChange
    | SetCustomLineItemCustomTypeChange
    | SetCustomLineItemMoneyChange
    | SetCustomLineItemShippingDetailsChange
    | SetCustomLineItemTaxAmountChange
    | SetCustomLineItemTaxCategoryChange
    | SetCustomLineItemTaxRateChange
    | SetCustomLineItemTaxedPriceChange
    | SetCustomLineItemTotalPriceChange
    | SetCustomShippingMethodChange
    | SetCustomTypeChange
    | SetCustomerChange
    | SetCustomerEmailChange
    | SetCustomerGroupChange
    | SetCustomerIdChange
    | SetCustomerNumberChange
    | SetDateOfBirthChange
    | SetDefaultBillingAddressChange
    | SetDefaultShippingAddressChange
    | SetDeleteDaysAfterLastModificationChange
    | SetDeliveryAddressChange
    | SetDeliveryItemsChange
    | SetDescriptionChange
    | SetDiscountedPriceChange
    | SetDistributionChannelsChange
    | SetExpectedDeliveryChange
    | SetExternalIdChange
    | SetFirstNameChange
    | SetGeoLocationChange
    | SetImageLabelChange
    | SetInputTipChange
    | SetInterfaceIdChange
    | SetIsValidChange
    | SetKeyChange
    | SetLanguagesChange
    | SetLastNameChange
    | SetLineItemDeactivatedAtChange
    | SetLineItemDiscountedPriceChange
    | SetLineItemDiscountedPricePerQuantityChange
    | SetLineItemDistributionChannelChange
    | SetLineItemPriceChange
    | SetLineItemProductKeyChange
    | SetLineItemProductSlugChange
    | SetLineItemShippingDetailsChange
    | SetLineItemTaxAmountChange
    | SetLineItemTaxRateChange
    | SetLineItemTaxedPriceChange
    | SetLineItemTotalPriceChange
    | SetLocaleChange
    | SetLocalizedDescriptionChange
    | SetLocalizedNameChange
    | SetMaxApplicationsChange
    | SetMaxApplicationsPerCustomerChange
    | SetMetaDescriptionChange
    | SetMetaKeywordsChange
    | SetMetaTitleChange
    | SetMethodInfoInterfaceChange
    | SetMethodInfoMethodChange
    | SetMethodInfoNameChange
    | SetMiddleNameChange
    | SetNameChange
    | SetOrderLineItemCustomFieldChange
    | SetOrderLineItemCustomTypeChange
    | SetOrderNumberChange
    | SetOrderTaxedPriceChange
    | SetOrderTotalPriceChange
    | SetOrderTotalTaxChange
    | SetParcelItemsChange
    | SetParcelMeasurementsChange
    | SetParcelTrackingDataChange
    | SetPermissionsChange
    | SetPricesChange
    | SetProductCountChange
    | SetProductPriceCustomFieldChange
    | SetProductPriceCustomTypeChange
    | SetProductSelectionsChange
    | SetProductVariantKeyChange
    | SetPropertyChange
    | SetPurchaseOrderNumberChange
    | SetRatingChange
    | SetReservationsChange
    | SetRestockableInDaysChange
    | SetReturnPaymentStateChange
    | SetReturnShipmentStateChange
    | SetSalutationChange
    | SetSearchKeywordsChange
    | SetSellerCommentChange
    | SetShippingAddressChange
    | SetShippingInfoPriceChange
    | SetShippingInfoTaxedPriceChange
    | SetShippingMethodChange
    | SetShippingMethodTaxAmountChange
    | SetShippingMethodTaxRateChange
    | SetShippingRateChange
    | SetShippingRateInputChange
    | SetShoppingListLineItemCustomFieldChange
    | SetShoppingListLineItemCustomTypeChange
    | SetSkuChange
    | SetSlugChange
    | SetStateRolesChange
    | SetStatusInterfaceCodeChange
    | SetStatusInterfaceTextChange
    | SetStoreChange
    | SetStoreModeChange
    | SetStoresChange
    | SetSupplyChannelChange
    | SetSupplyChannelsChange
    | SetTargetChange
    | SetTaxCategoryChange
    | SetTextChange
    | SetTextLineItemCustomFieldChange
    | SetTextLineItemCustomTypeChange
    | SetTextLineItemDescriptionChange
    | SetTitleChange
    | SetTransitionsChange
    | SetValidFromAndUntilChange
    | SetValidFromChange
    | SetValidToChange
    | SetValidUntilChange
    | SetValueChange
    | SetVariantAvailabilityChange
    | SetVariantSelectionChange
    | SetVatIdChange
    | TransitionCustomLineItemStateChange
    | TransitionLineItemStateChange
    | TransitionStateChange
    | UnknownChange
    | UnpublishChange
    | UpdateSyncInfoChange
    | VerifyEmailChange

Difference between the previous and next version of a resource represented by previousValue (omitted, for example, on creations) and nextValue of the associated change. A Change can also contain extra fields that provide further information.

They are not identical to the actual update actions sent.