Details
Description
Make sure to cleanup line item table for duplicate entries,
before adding unique constraint on `entity_table`,`entity_id`,`price_field_value_id`,`price_field_id`
We have added this constraints in v3.3.beta3 during CRM-7111
So we should update beta3 upgrade sql file and cleanup line item table before adding unique constraint.
Related forum thread is here : http://forum.civicrm.org/index.php/topic,16920.0/topicseen.html