Gisela,

I tried your suggestion but unfortunately it didn't work. I could see all the if() are trun and the pega statement inside the if blocks were executed. But we still get the same error. Please note that we try to reload the entire iframe from a dropdown outside of the iframe. the iframe contains the case. Below is the details:

.js file:

//reload registration pages
function reloadRegistration()
{
  
  console.log("look for registration iframe...");
  if(document.getElementById("PR_SDPRegistrationBodyIfr")) {
      console.log("reload iframe");
      document.getElementById("PR_SDPRegistrationBodyIfr").contentWindow.location.reload();
  }   
}

function setBusyIndicatorCustom() { 
  console.log("setBusyIndicatorCustom");
  if (pega.u.d.gBusyInd == null) { 
      Console.log("gBusyInd == null");
      pega.u.d.setBusyIndicator(); 
  } 
  if (pega.u.d.gBusyInd) { 
    console.log("gBusyInd == true")
      pega.u.d.gBusyInd.show(true, true); 
  } 
} 

function resetBusyIndicatorCustom() { 
  console.log("resetBusyIndicatorCustom")
  if (pega.u.d.gBusyInd) { 
    console.log("gBusyInd == true")
      pega.u.d.gBusyInd.hide(); 
  } 
} 

We noticed the error has nothing to do language setting. Taking out the language setting activity, the error still exists. Below is the sequence we tried:

(1) setBusyIndicatorCustom();

(2) reloadRegistration();

(3) resetBusyIndicatorCustom();