I have been presented with the following error on when using civicrm-webform and paypal standard:
CiviCRM_API3_Exception: DB Constraint Violation - possibly domain_id should possibly be marked as mandatory for this API. If so, please raise a bug report. in civicrm_api3() (line 45 of /home/shishukunj/www/www/sites/all/modules/civicrm/api/api.php).
Is this a site specific issue or something to do with the core or the module?
Happy to help fix in either case as we are now committed to using 4.7 but need to iron out the bugs as we using webform-civicrm, related permissions and paypal payments heavily.