Hello,
   I am trying to import Virtuemart products and some of the fields I cannot manage to find in the list of Available fields.
The product_name field is not available.
I even tried the Update Fields Process but doesn't work. Please help
This could be problem with index of csvi_availablefields table. Can you try removing the table from phpmyadmin and run the below query? You need to run the 
update Available fields after that.
CREATE TABLE IF NOT EXISTS `#__csvi_availablefields` (
	`csvi_availablefield_id` INT(11) NOT NULL AUTO_INCREMENT,
	`csvi_name` VARCHAR(255) NOT NULL,
	`component_name` VARCHAR(55) NOT NULL,
	`component_table` VARCHAR(55) NOT NULL,
	`component` VARCHAR(55) NOT NULL,
	`action` VARCHAR(6) NOT NULL,
	`isprimary` TINYINT(1) NOT NULL DEFAULT '0',
	PRIMARY KEY (`csvi_availablefield_id`),
	UNIQUE INDEX `component_name_table` (`component_name`, `component_table`, `component`, `action`)
) CHARSET=utf8 COMMENT='Available fields for CSVI';
P.S: Please work on the tutorials..
Yes we are working on updating our tutorials, Thank you for feedback.			
 
			
				Kind regards,
Tharuna
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