[IMP] if not effective date has been given we set the effective date.

easy_my_coop/models/operation_request.py

@@ -225,6 +225,7 @@ class operation_request(models.Model):
             effective_date = self.effective_date
         else:
             effective_date = self.get_date_now()
+            self.effective_date = effective_date
         sub_request = self.env['subscription.request']
 
         for rec in self: