From the Palette window, in the Web Service section , select the Invoke activity and drag and drop it to the prompt between the Receive1 activity and the Process End activity in the process box on the design view canvas.
A Invoke1 activity is added to the design view canvas.
Click the Invoke1 activity's Edit icon.
The Invoke1 Property Editor appears.
On the Main tab, accept the value in the Name field. From the Partner Link drop-down list, choose PartnerLink2. The IDE populates the Operation field with write.
Click the Create button next to the Input Variable Field. The New Input Variable dialog box appears. Click OK to accept the default values.
Click OK to close the Invoke1 Property Editor.
The Design view displays the new connection between PartnerLink2 and the Invoke1 in the process box.