diff --git a/pms_api_rest/datamodels/pms_checkin_partner.py b/pms_api_rest/datamodels/pms_checkin_partner.py
index cbab41329..6fb592473 100644
--- a/pms_api_rest/datamodels/pms_checkin_partner.py
+++ b/pms_api_rest/datamodels/pms_checkin_partner.py
@@ -24,6 +24,7 @@ class PmsCheckinPartnerInfo(Datamodel):
     residenceCity = fields.String(required=False, allow_none=True)
     nationality = fields.Integer(required=False, allow_none=True)
     countryState = fields.Integer(required=False, allow_none=True)
+    countryStateName = fields.String(required=False, allow_none=True)
     countryId = fields.Integer(required=False, allow_none=True)
     checkinPartnerState = fields.String(required=False, allow_none=True)
     actionOnBoard = fields.Boolean(required=False, allow_none=True)
diff --git a/pms_api_rest/services/pms_reservation_service.py b/pms_api_rest/services/pms_reservation_service.py
index d1c2aabf1..20ff02a7d 100644
--- a/pms_api_rest/services/pms_reservation_service.py
+++ b/pms_api_rest/services/pms_reservation_service.py
@@ -596,6 +596,9 @@ class PmsReservationService(Component):
                         countryState=checkin_partner.residence_state_id.id
                         if checkin_partner.residence_state_id
                         else None,
+                        countryStateName=checkin_partner.residence_state_id.name
+                        if checkin_partner.residence_state_id
+                        else None,
                         countryId=checkin_partner.residence_country_id.id
                         if checkin_partner.residence_country_id
                         else None,