Create new column in notifications and notification_history to store the client_reference because I remembered that reference is used for email providers.

app/models.py

@@ -519,6 +519,7 @@ class Notification(db.Model):
         onupdate=datetime.datetime.utcnow)
     status = db.Column(NOTIFICATION_STATUS_TYPES_ENUM, index=True, nullable=False, default='created')
     reference = db.Column(db.String, nullable=True, index=True)
+    client_reference = db.Column(db.String, index=True, nullable=True)
     _personalisation = db.Column(db.String, nullable=True)
 
     template_history = db.relationship('TemplateHistory', primaryjoin=and_(
@@ -561,6 +562,7 @@ class NotificationHistory(db.Model):
     updated_at = db.Column(db.DateTime, index=False, unique=False, nullable=True)
     status = db.Column(NOTIFICATION_STATUS_TYPES_ENUM, index=True, nullable=False, default='created')
     reference = db.Column(db.String, nullable=True, index=True)
+    client_reference = db.Column(db.String, nullable=True)
 
     @classmethod
     def from_notification(cls, notification):

app/notifications/process_notifications.py

@@ -60,7 +60,7 @@ def persist_notification(template_id,
         created_at=created_at or datetime.utcnow().strftime(DATETIME_FORMAT),
         job_id=job_id,
         job_row_number=job_row_number,
-        reference=reference
+        client_reference=reference
     )
     dao_create_notification(notification)
     return notification

app/v2/notifications/notification_schemas.py

@@ -101,7 +101,7 @@ post_email_response = {
 
 def create_post_sms_response_from_notification(notification, body, from_number, url_root):
     return {"id": notification.id,
-            "reference": notification.reference,
+            "reference": notification.client_reference,
             "content": {'body': body,
                         'from_number': from_number},
             "uri": "{}/v2/notifications/{}".format(url_root, str(notification.id)),
@@ -112,7 +112,7 @@ def create_post_sms_response_from_notification(notification, body, from_number,
 def create_post_email_response_from_notification(notification, content, subject, email_from, url_root):
     return {
         "id": notification.id,
-        "reference": notification.reference,
+        "reference": notification.client_reference,
         "content": {
             "from_email": email_from,
             "body": content,