Solution : https://service.sap.com/sap/support/notes/988053 (SAP Service marketplace login required)
Key words : 
front end webdynpro application views, terms it0021/it0106 fields ess~, case10            0021    13         a210            0021       14         b3front end, ~fam domestic partner - 13 child, family/dependents scenario, subtype table t7xsspersubtype, customizing table t7xsspersubtype, family/dependents screen, infotype family/dependents, newly added subtypes 13
Related Notes : 
       
| 1245560 | Composite SAP Note : XSS Documentation |