Update error message.

Ref: #4986

rest_framework/fields.py

@@ -1085,7 +1085,7 @@ class DateTimeField(Field):
     default_error_messages = {
         'invalid': _('Datetime has wrong format. Use one of these formats instead: {format}.'),
         'date': _('Expected a datetime but got a date.'),
-        'make_aware': _('Datetime can not be represented in timezone "{timezone}".')
+        'make_aware': _('Invalid datetime for the timezone "{timezone}".')
     }
     datetime_parser = datetime.datetime.strptime
 

tests/test_fields.py

@@ -1213,8 +1213,8 @@ class TestNaiveDayLightSavingTimeTimeZoneDateTimeField(FieldValues):
     """
     valid_inputs = {}
     invalid_inputs = {
-        '2017-03-12T02:30:00': ['Datetime can not be represented in timezone "America/New_York".'],
-        '2017-11-05T01:30:00': ['Datetime can not be represented in timezone "America/New_York".']
+        '2017-03-12T02:30:00': ['Invalid datetime for the timezone "America/New_York".'],
+        '2017-11-05T01:30:00': ['Invalid datetime for the timezone "America/New_York".']
     }
     outputs = {}
     field = serializers.DateTimeField(default_timezone=pytz.timezone('America/New_York'))