diff --git a/openedx/core/djangoapps/enrollments/data.py b/openedx/core/djangoapps/enrollments/data.py
index 457a03bdcb2..956021b1dd9 100644
--- a/openedx/core/djangoapps/enrollments/data.py
+++ b/openedx/core/djangoapps/enrollments/data.py
@@ -26,7 +26,8 @@
     CourseEnrollmentAttribute,
     CourseFullError,
     EnrollmentClosedError,
-    NonExistentCourseError
+    NonExistentCourseError,
+    EnrollmentNotAllowed,
 )
 from common.djangoapps.student.roles import RoleCache
 
@@ -148,6 +149,8 @@ def create_course_enrollment(username, course_id, mode, is_active):
     try:
         enrollment = CourseEnrollment.enroll(user, course_key, check_access=True)
         return _update_enrollment(enrollment, is_active=is_active, mode=mode)
+    except EnrollmentNotAllowed as err:
+        raise InvalidEnrollmentAttribute(str(err))
     except NonExistentCourseError as err:
         raise CourseNotFoundError(str(err))  # lint-amnesty, pylint: disable=raise-missing-from
     except EnrollmentClosedError as err:
diff --git a/openedx/core/djangoapps/enrollments/views.py b/openedx/core/djangoapps/enrollments/views.py
index af48f244268..29de959d58b 100644
--- a/openedx/core/djangoapps/enrollments/views.py
+++ b/openedx/core/djangoapps/enrollments/views.py
@@ -20,7 +20,7 @@
 from openedx.core.djangoapps.embargo import api as embargo_api
 from openedx.core.djangoapps.enrollments import api
 from openedx.core.djangoapps.enrollments.errors import (
-    CourseEnrollmentError, CourseEnrollmentExistsError, CourseModeNotFoundError,
+    CourseEnrollmentError, CourseEnrollmentExistsError, CourseModeNotFoundError, InvalidEnrollmentAttribute,
 )
 from openedx.core.djangoapps.enrollments.forms import CourseEnrollmentsApiListForm
 from openedx.core.djangoapps.enrollments.paginators import CourseEnrollmentsApiListPagination
@@ -818,6 +818,13 @@ def post(self, request):
 
             log.info('The user [%s] has already been enrolled in course run [%s].', username, course_id)
             return Response(response)
+        except InvalidEnrollmentAttribute as error:
+            return Response(
+                status=status.HTTP_400_BAD_REQUEST,
+                data={
+                    "message": str(error)
+                }
+            )
         except CourseModeNotFoundError as error:
             return Response(
                 status=status.HTTP_400_BAD_REQUEST,