Code:

class criteria(models.Model):
     details =   models.CharField(max_length = 512)
     Headerid = models.ForeignKey(Header)

     def __unicode__(self):
        return self.id()

the details corresponds to a textarea in the UI and a validation is done for 512 characters but when this is saved.

     /home/project/django/django/core/handlers/base.py in get_response, line 109

Is this any thing related with schema or number of characters entered from UI