Praxeme is an enterprise methodology that combines the two approaches SOA and MDA to build an information system. It is based on the ideology of separating the business concern into a homogeneous set called "aspect" to better control the usual complexity of a system. The instantiation of the ReLEL requirements model in the Praxeme methodology is an interesting approach to improve the quality of the software development process because it not only allows to specify the user requirements but also to represent the very precise conceptual level of the future system to be designed. Therefore, this article deals with the automatic generation of SOAP web services that represent the software aspect of the Praxeme methodology from the intentional aspect specified by the ReLEL requirements model. To achieve this, we proceeded in two steps, namely the proposal of the rules for deriving the Praxeme Logical Factory Model (logical aspect) into a Web Service Description Language model or WSDL (software aspect) classified as Model to Model Transformation (M2M) in the MDA approach and then the proposal of the rules for translating the WSDL model into a WSDL document known as Model to Text Translation (M2T). The result obtained from the approach proposed in this paper is a WSDL file which is an XML language allowing the complete description of a Web service. We used ATL for the implementation of the M2M approach transformation rules and then the Acceleo template engine for the translation of the M2T.