Can I omit 'parameterOrder' attribute in WSDL file?

Question

WSDL snippet:

<wsdl:portType name="ITS-ActivityObj">
<wsdl:operation name="addActivity" parameterOrder="pc_SlsmnCode pc_FollowDate pc_ActSrc pc_InXML pl_GetRSXML pc_FieldList pl_WriteXSD pl_MinSchema pc_RSXML pc_batchCount pc_errMsg">
  <wsdl:input message="tns:ITS-Activity_addActivity"/>
  <wsdl:output message="tns:ITS-Activity_addActivityResponse"/>
  <wsdl:fault name="ITS-ActivityFault" message="tns:FaultDetailMessage"/>
</wsdl:operation>

I'm using .NET env. I seems omit parameterOrder will no affect proxy generation. Client code still works.

Answer 1

Yes you can omit it. parameterOrder attribute is defined as an optional attribute according to the spec.

Note that this information serves as a "hint" and may safely be ignored by those not concerned with RPC signatures. Also, it is not required to be present, even if the operation is to be used with an RPC-like binding.