Variant can overwrite an existing product

[Movix]

Bug

When creating a variant and using a reference of an existing product, the existing product is replaced by the variant

Dolibarr Version

20.05

Environment PHP

8.2

Environment Database

mariadb

Steps to reproduce the behavior and expected behavior

Reproduce :
Create a product with reference A
Create a product with reference B
Create a variant of product B and set the reference of the variant as A
Product A will be replace by the variant

Expected :
When creating a variant and assigning a reference of an already existing product the variant should not be created and an error should be raised indicating that the chosen reference is already used

Attached files

No response