Solution : https://service.sap.com/sap/support/notes/399620 (SAP Service marketplace login required)
Key words :
terms pz12 spouse ess it0021 it0106 reason, ess scenario family member/dependents, function hr_ben_check_rel_person_unused forthe entire duration, international include rheh06f3, module check_relationships checks, period starting from02-01-2003, delete it0021 record, function hr_ben_check_rel_person_unused, function bapi_family_delimit, suppose it0021
Related Notes :
| 429947 | IT0021: No dependent changes allowed in Infotype 0021. |
| 400593 | ESS2001: PZ12 - Unable to delete spouse |