Product Reference all the same

[Ster]

Hello,

 

I just see in my shop that the reference codes from the items in 2 categories do have all the same reference code, but in the Backend it is not the case. The product in the categories here below does all have the same reference.

 

http://www.ster-sieraden.nl/28-oostenrijks-kristal

http://www.ster-sieraden.nl/27-edelstaal

 

What can i do to get it right? I tried to copie a product with another reference but still the same code is showed.

 

I use prestashop 1.5.6

url. www.ster-sieraden.nl 

 

Thx for the reactions.

[Ster]

The problem is Solved.

 

It had to do with the Combination tool.

I don't know exactly what the problem was but i think it had to do with copying the products and after that not changing the reference in the combination tool.

 

I opened every item and updated the Combination tool and the problem was gone. So solved!