wm.tn.dictionary:getIDTypes

idTypes	Object A java.lang.Hashtable that contains the external ID types. The Hashtable is keyed by the string external ID type descriptions, and the values are the short external ID type codes.
idTypesByID	Object A java.lang.Hashtable that contains the external ID types. The Hashtable is keyed by the short external ID types codes and the values are the string external ID types descriptions.
descriptions	String List A sorted list of all external ID type descriptions, returned as a string[]. The list is sorted in ascending alphabetical sequence.

2. If you have the external ID type ID and you need its description, use the Hashtable returned in idTypesByID.

3. To present the external ID types sorted in alphabetical order, use the String List returned in descriptions. Use the Hashtable in idTypes to look up the corresponding ID for any String in the descriptions list.