Prepopulate Lookup Field of parent From - using PrePopulationAdapater - OIM 11.1.2

Question

Hi Experts,
please help me in implementing the below requirement, (Need to prepopulate Lookup field present in parent form of disconnected application instance.)
Requirement
1) Requestor logs into Identity Self service console
2) searches for a eligible user(Beneficiary) and requests disconnected application instance from catalog
3) On check out, parent form of disconnected application instance is displayed.
4) Here, I have a field visible as dropdown list (this is of Lookup type field and is added in the parent form while creating disconnected app instance and is visible as dropdown list in parent form when checked out)
5) This dropdown list should be prepopulated with values based on Beneficiary attribute values
I already tried creating a class implementing "PrepopulationAdapter". With this I am able to prepopulate text fields of parent form. Same I tried to prepopulate dropdown of parent form, but couldn't do it.
Below is sample code used
public class testattr implements PrePopulationAdapter
  public testattr()
super();
  public Serializable prepopulate(RequestData paramRequestData)
   String Str1 = "DropDownValue1";
   String Str2 = "DropDownValue2";
List<Beneficiary> benUserList = paramRequestData.getBeneficiaries();
logger.info("***** END - BADGE TEST *****");
ArrayList<String> plist = new ArrayList<String>();
plist.add(prePopUserID);
logger.info("adding plist");
return plist; //WHAT OBJECT SHOULD BE RETURNED HERE..
In the above sample code, what should be the object returned, to populate DROPDOWN list in parent form(in the UI of check out page of catalog.)
If prepopulating text field, return a String object would work. So, what should be object returned to populate DROPDOWN list.
Please help me in prepopulating dropdown list of parent form.
Thanks in advance..

Answer 1

Hi Nishith,
Thanks for reply...
Yes. I tried returning codekey and hence in the UI the decode(Meaning) of the codekey got displayed. Its working only if return only ONE string.
But I wanted to return more than 1 string. So in the drop down more than 1 Group is displayed.
So, just gave a trail and error... tried returing List, String array and got an error saying "IAM-2050062 : The value of the attribute <Attribute Name> is not of the required type String"
Regards,
Praveen