How to run a webservice Using button or smart link on Shipment Screen

Summary:

Need a custom button on the shipment screen to run an external web service

Content (please ensure you mask any confidential information):

Hi,

we have a requirement on the buy shipment screen we need to add a button or smart link when clicked on it runs an external web service and takes a query parameter from the buy shipment screen how can we achieve that?

Version (include the version you are using, if applicable):

24 A

Code Snippet (add any code snippets that support your topic, if applicable):