What type of data does the SOAP API support?

The SOAP API primarily supports XML for data interchange. This is because SOAP (Simple Object Access Protocol) is a protocol that relies on XML formatting to structure the messages exchanged between clients and services. Each SOAP message is composed of an envelope that contains the header and body, both formatted in XML. This strict adherence to XML allows for a standardized way of exchanging structured information over web services.

The other formats listed, such as JSON or CSV, are not natively supported by the SOAP API. JSON is typically associated with RESTful services, and while there are conversions and tools that can allow for JSON to interface with SOAP, it is not the primary format for SOAP-based interactions. CSV is a data format primarily used for tabular data and does not fit the structured format required by SOAP. Therefore, the correct understanding is that the SOAP API utilizes XML as its core data representation format.