getCustomization and GETALL record required

I'm trying to retrieve the internal Id's for some of our customizations so I can create a complete invoice via WS.  I can't retrieve our customization as expected via:

            Status status = nsService.login(thisPassport).status;
            CustomizationType getType = new CustomizationType();
            getType.getCustomizationType = GetCustomizationType.transactionColumnCustomField;


            GetCustomizationResult response = nsService.getCustomization(getType);

This returns a error stating "The getAll record type is required" so I'm trying:


            Status status = nsService.login(thisPassport).status;
            GetAllRecord allCustomization = new GetAllRecord();
            allCustomization.recordType = GetAllRecordType.????; <<- I can't determine what goes here.

            GetAllResult allResult = nsService.getAll(allCustomization);
               
            nsService.logout();

Should the first example have worked?  If not then what approach should I take.