OpenCart VQMOD extension: Detect Duplicate Product Model
OpenCart versions supported: from 1.5.4 to 220.127.116.11
Detect Duplicate Product Model VQMOD does not let you use the same model for more than one product in your store.
After you add or edit product information and hit Save, extension checks if the product model is not used for other products. If there are duplicates, it shows the message that this model is already in use for another product.