diff --git a/src/antares/service/local_services/binding_constraint_local.py b/src/antares/service/local_services/binding_constraint_local.py
index 15254e03..e2402ec3 100644
--- a/src/antares/service/local_services/binding_constraint_local.py
+++ b/src/antares/service/local_services/binding_constraint_local.py
@@ -35,7 +35,8 @@ def create_binding_constraint(
         )
 
     def add_constraint_terms(self, constraint: BindingConstraint, terms: List[ConstraintTerm]) -> List[ConstraintTerm]:
-        raise NotImplementedError
+        new_terms = [term for term in terms if term.id not in constraint.get_terms()]
+        return new_terms
 
     def delete_binding_constraint_term(self, constraint_id: str, term_id: str) -> None:
         raise NotImplementedError
diff --git a/tests/antares/services/local_services/test_study.py b/tests/antares/services/local_services/test_study.py
index ef4fd2e5..bcb4839f 100644
--- a/tests/antares/services/local_services/test_study.py
+++ b/tests/antares/services/local_services/test_study.py
@@ -14,6 +14,7 @@
     BindingConstraintProperties,
     BindingConstraintFrequency,
     BindingConstraintOperator,
+    ConstraintTerm,
 )
 from antares.model.commons import FilterOption
 from antares.model.hydro import Hydro
@@ -1167,3 +1168,8 @@ def test_constraints_and_ini_have_custom_properties(self, local_study_with_const
 
         # Then
         assert actual_ini_content == expected_ini_content
+
+    def test_constraint_can_add_term(self, test_constraint):
+        new_term = [ConstraintTerm(data={"area1": "fr", "area2": "at"})]
+        test_constraint.add_terms(new_term)
+        assert test_constraint.get_terms()