--- schema_version: "1" id: ccd4c88525ea4ac6c3946ac495c8693c4ad5b109adc735691e201dcd01fce122 title: CommerceTax Namespace collection: legacydeveloper version: current locale: en-us portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/apexref/apex_namespace_commercetax.md canonical_url: https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_namespace_commercetax.htm source_site: developer.salesforce.com content_type: documentation content_hash: a2dcc9a5a380b5b6f3c94a65ed26bd14dd3607dec55946835581e3f2dd361a81 description: Manage the communication between Salesforce and an external tax engine. --- # CommerceTax Namespace Manage the communication between Salesforce and an external tax engine. The CommerceTax namespace includes these classes. - **[AbstractTransactionResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_AbstractTransactionResponse.htm#apex_class_commercetax_AbstractTransactionResponse)** Abstract class that contains methods for setting tax fields based on the external tax provider's response. Response classes that extend AbstractTransactionResponse inherit these methods. - **[AddressesResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_AddressesResponse.htm#apex_class_commercetax_AddressesResponse)** Sets the tax address fields based on a response from the external tax engine. Contains setter methods for the Ship From, Ship To, and Sold To addresses. - **[AddressResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_AddressResponse.htm#apex_class_commercetax_AddressResponse)** Contains a location code sent from the external tax engine. - **[AmountDetailsResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_AmountDetailsResponse.htm#apex_class_commercetax_AmountDetailsResponse)** Sets tax amount fields based on a response from the external tax engine. - **[CalculateTaxRequest Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_CalculateTaxRequest.htm#apex_class_commercetax_CalculateTaxRequest)** Represents a request to an external tax engine to calculate tax. Extends the TaxTransactionRequest class and is the top-level request class. - **[CalculateTaxResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_CalculateTaxResponse.htm#apex_class_commercetax_CalculateTaxResponse)** Sets the values of the tax transaction following a response from the external tax engine. Extends the AbstractTransactionResponse class and is the top-level response class. - **[CalculateTaxType Enum](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_enum_commercetax_CalculateTaxType.htm)** Shows whether a tax calculation request is for estimated or actual tax. - **[CustomTaxAttributesResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_CustomTaxAttributesResponse.htm#apex_class_commercetax_CustomTaxAttributesResponse)** Sets additional data or custom attributes in the tax response. - **[ErrorResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_ErrorResponse.htm#apex_class_commercetax_ErrorResponse)** Use to respond with an error after receiving errors from the PaymentGatewayAdapter methods of the [CommercePayments](https://developer.salesforce.com/docs/atlas.en-us.264.0.apexref.meta/apexref/apex_namespace_commercepayments.htm "HTML (New Window)") namespace, such as request-forbidden responses, custom validation errors, or expired API tokens. - **[HeaderTaxAddressesRequest Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_HeaderTaxAddressesRequest.htm#apex_class_commercetax_HeaderTaxAddressesRequest)** Captures the address values that are applicable for the quote or order transaction. - **[ImpositionResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_ImpositionResponse.htm#apex_class_commercetax_ImpositionResponse)** Stores details of tax impositions from the external tax engine. - **[JurisdictionResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_JurisdictionResponse.htm#apex_class_commercetax_JurisdictionResponse)** Stores details from the external tax engine about the tax jurisdiction used in the tax calculation process. A tax jurisdiction represents a government entity that collects tax. - **[LineItemResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_LineItemResponse.htm#apex_class_commercetax_LineItemResponse)** Response class that stores details of a list of one or more line items on which the tax engine has calculated tax. - **[LineTaxAddressesRequest Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_LineTaxAddressesRequest.htm#apex_class_commercetax_LineTaxAddressesRequest)** Stores details of the addresses applied per line item in a tax calculation request. - **[RequestType Enum](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_enum_commercetax_RequestType.htm)** Shows the type of tax request made to the tax engine. - **[ResultCode Enum](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_enum_commercetax_ResultCode.htm)** Code that represents the results of a tax request made to the tax engine. - **[RuleDetailsResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_RuleDetailsResponse.htm#apex_class_commercetax_RuleDetailsResponse)** Contains details about the tax rules used for tax calculation. - **[TaxAddressesRequest Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_TaxAddressesRequest.htm#apex_class_commercetax_TaxAddressesRequest)** Contains methods to get and set tax address values. - **[TaxAddressRequest Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_TaxAddressRequest.htm#apex_class_commercetax_TaxAddressRequest)** Contains address details used for tax calculation. - **[TaxApiException Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_TaxApiException.htm#apex_class_commercetax_TaxApiException)** Contains details about any exceptions during the tax calculation process. Extends the ApexBaseException class. - **[TaxCustomerDetailsRequest Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_TaxCustomerDetailsRequest.htm#apex_class_commercetax_TaxCustomerDetailsRequest)** Contains customer details used in tax calculation. - **[TaxDetailsResponse Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_TaxDetailsResponse.htm#apex_class_commercetax_TaxDetailsResponse)** Stores details of the tax values that an external tax engine calculates in response to a tax calculation request. - **[TaxEngineAdapter Interface](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_interface_commercetax_TaxEngineAdapter.htm#apex_interface_commercetax_TaxEngineAdapter)** Retrieves information from the tax engine and evaluates the information to define tax details. - **[TaxEngineContext Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_TaxEngineContext.htm#apex_class_commercetax_TaxEngineContext)** Wrapper class that stores details about the type of a tax calculation request. - **[TaxLineItemRequest Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_TaxLineItemRequest.htm#apex_class_commercetax_TaxLineItemRequest)** Contains line item details of a tax request. - **[TaxSellerDetailsRequest Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_TaxSellerDetailsRequest.htm#apex_class_commercetax_TaxSellerDetailsRequest)** Contains tax code details used in the tax calculation request. - **[TaxTransactionRequest Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_commercetax_TaxTransactionRequest.htm#apex_class_commercetax_TaxTransactionRequest)** Abstract class for storing customer details used in tax calculation and estimation requests. - **[TaxTransactionStatus Enum](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_enum_commercetax_TaxTransactionStatus.htm)** Shows whether the tax transaction has been committed or uncommitted. - **[TaxTransactionType Enum](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_enum_commercetax_TaxTransactionType.htm)** Shows whether the tax transaction is for a credit or debit transaction.