I don't thnik any similar topic are created here
First of all, a summary of the situation:
I descovered Magento one week ago during my job interview. I did not have any time to learn a lot of things about Magento.
I began in my new company monday morging, and I have to create a promotion before wednesday evening. One of the solutions I found is to create a Client group.
But the fact is: It's not working. When I click on "Save the clients group", after I entered its name, there is the error message printed:
SQLSTATE: Integrity constraint violation: 1062 Duplicate entry '0' for key 'PRIMARY', query was: INSERT INTO `customer_group` (`customer_group_code`, `tax_class_id`) VALUES (?, ?)
I know how to theorically resolve that problem. But I didn't find any way to access the sql database.
The first problem was: I have a promo code, and several actions applying on the basket. If you have any idee how I could proceed...
I talked to the old webmaster. I accessed the phpmyadmin interface (I didn't knew there was one) and inserted the groups manually.