Please find the step to call the tcode pa60 from webdynpro ABAP .
Publish the three of the component below this is to refersh/activate the integration between R3 and internet gui in the screen shot provided below .
Create a link to URL UI element .
Pass the reference field as the combination of the server and the transaction which we want to execute example :
URL of Z application – http://soemthing.main.glb.corp.local:8003/sap/bc/webdynpro/sap/z_tcode
Tcode which you want to execute – PA61
So create the url and assign to ur link to URL UI element as reference field
Out put after you click on the reference url which you created.