Preconditions:

• Configure project by following this documentation: https://doc.ibexa.co/en/master/pim/create_custom_attribute_type/#storage-converter
• Add custom attribute percent and set min / max value range e.g 1 and 100
• Add PT based on custom attribute

Steps to reproduce

1. Log in to back office.
2. Go to Product-catalog/ Products.
3. Start creating a new product.
4. Select Product-type from preconditions.
5. In attribute percent set value: 0
6. Publish

Actual result:

An error 400

Argument '$createStruct' is invalid: '0' is incorrect value 

Expected result:

An error 400 should be handled with correct notification message that user set incorrect attribute value.