How to repeat:

• create new action, name it
• add one simple action condition (i.e. IP)
• add one operation "link to template", select one template
• save the action
• edit the action
• click "edit" on "operations" -> "link to templates"
• click "update"
• click "save"

observe error trace:

Undefined index: actionid [actionconf.php:152 ? CFrontendApiWrapper->update() ? CApiWrapper->__call() ? CFrontendApiWrapper->callMethod() ? CApiWrapper->callMethod() ? CFrontendApiWrapper->callClientMethod() ? CLocalApiClient->callMethod() ? call_user_func_array() ? CAction->update() ? CAction->updateOperations() in /home/andrew/zabbix/dev/trunk/frontends/php/api/classes/CAction.php:933]
Undefined index: [actionconf.php:152 ? CFrontendApiWrapper->update() ? CApiWrapper->__call() ? CFrontendApiWrapper->callMethod() ? CApiWrapper->callMethod() ? CFrontendApiWrapper->callClientMethod() ? CLocalApiClient->callMethod() ? call_user_func_array() ? CAction->update() ? CAction->updateOperations() in /home/andrew/zabbix/dev/trunk/frontends/php/api/classes/CAction.php:933]
Undefined index: opconditions [actionconf.php:152 ? CFrontendApiWrapper->update() ? CApiWrapper->__call() ? CFrontendApiWrapper->callMethod() ? CApiWrapper->callMethod() ? CFrontendApiWrapper->callClientMethod() ? CLocalApiClient->callMethod() ? call_user_func_array() ? CAction->update() ? CAction->updateOperations() in /home/andrew/zabbix/dev/trunk/frontends/php/api/classes/CAction.php:1169]
Argument 2 passed to zbx_array_diff() must be of the type array, null given, called in /home/andrew/zabbix/dev/trunk/frontends/php/api/classes/CAction.php on line 1169 and defined [actionconf.php:152 ? CFrontendApiWrapper->update() ? CApiWrapper->__call() ? CFrontendApiWrapper->callMethod() ? CApiWrapper->callMethod() ? CFrontendApiWrapper->callClientMethod() ? CLocalApiClient->callMethod() ? call_user_func_array() ? CAction->update() ? CAction->updateOperations() ? zbx_array_diff() in /home/andrew/zabbix/dev/trunk/frontends/php/include/func.inc.php:864]
array_diff(): Argument #2 is not an array [actionconf.php:152 ? CFrontendApiWrapper->update() ? CApiWrapper->__call() ? CFrontendApiWrapper->callMethod() ? CApiWrapper->callMethod() ? CFrontendApiWrapper->callClientMethod() ? CLocalApiClient->callMethod() ? call_user_func_array() ? CAction->update() ? CAction->updateOperations() ? zbx_array_diff() ? array_diff() in /home/andrew/zabbix/dev/trunk/frontends/php/include/func.inc.php:868]
array_diff(): Argument #1 is not an array [actionconf.php:152 ? CFrontendApiWrapper->update() ? CApiWrapper->__call() ? CFrontendApiWrapper->callMethod() ? CApiWrapper->callMethod() ? CFrontendApiWrapper->callClientMethod() ? CLocalApiClient->callMethod() ? call_user_func_array() ? CAction->update() ? CAction->updateOperations() ? zbx_array_diff() ? array_diff() in /home/andrew/zabbix/dev/trunk/frontends/php/include/func.inc.php:871]
Invalid argument supplied for foreach() [actionconf.php:152 ? CFrontendApiWrapper->update() ? CApiWrapper->__call() ? CFrontendApiWrapper->callMethod() ? CApiWrapper->callMethod() ? CFrontendApiWrapper->callClientMethod() ? CLocalApiClient->callMethod() ? call_user_func_array() ? CAction->update() ? CAction->updateOperations() ? zbx_array_diff() in /home/andrew/zabbix/dev/trunk/frontends/php/include/func.inc.php:892]
Error in query [INSERT INTO optemplate (templateid,operationid,optemplateid) VALUES ('10106','11','13')] [Duplicate entry '11-10106' for key 'optemplate_1']
SQL statement execution has failed "INSERT INTO optemplate (templateid,operationid,optemplateid) VALUES ('10106','11','13')". [actionconf.php:152 ? CFrontendApiWrapper->update() ? CApiWrapper->__call() ? CFrontendApiWrapper->callMethod() ? CApiWrapper->callMethod() ? CFrontendApiWrapper->callClientMethod() ? CLocalApiClient->callMethod() ? call_user_func_array() ? CAction->update() ? CAction->updateOperations() ? DB::insert() ? DB::exception() in /home/andrew/zabbix/dev/trunk/frontends/php/include/classes/db/DB.php:441]