Hello, 

  I am new PEGA and need some help on best practices/implementation of a very classic functionalty.

  Scenario:  We have a UI , the User modifies some information on form and then clicks the 'Save' button.

  Expected Behaviour:  A REST service call is triggered ( external database) . While waiting for this response a    loader should appear on screen.

                                       Once the response is received from service we treat this reponse (failure/success) , display any relevant messages and refresh the section.

Could anybody kindly share on how to implement this.

Regards,