The disclosure is directed to a method of mapping an interface definition language (IDL) based communication to a simple object access protocol (SOAP) based communication. The method includes receiving an IDL schema to be mapped to an XML schema and processing the IDL schema. The IDL schema may be processed to identify IDL identifiers having an added prefix, an IDL union element having a boolean discriminator type, or an IDL interface type that includes a constant string. The method may also include mapping each of the IDL identifiers by removing the added prefixes, an optional element of the IDL union element to a first XML schema type having different minimum and maximum occurs values, or the IDL interface type by creating an XML schema enumeration having a value set to a string value of the constant string. The method further includes generating the XML schema.