Manufacturer based Item Variants

Hello Friends

I have been struggling with creation of Item Variants based on manufacturers.

On a fresh installation (I am a newbie for ErpNext) I did the following:

1 created a supplier
2 created a list of manufacturers
3 created an item and set “has Variants” to on
4 Set variants based on to “Manufacturer”
5 create variant by using the Manufacturer name & Part Number
6 When I save the item, I get error such as “Missing Fields - Mandatory fields required in Item - Variant Attributes"

Am I missing some steps here ?

(Using ErpNext 14)

Thanks for your help

change Mandatory Depends On of Variant Attributes to eval:(doc.has_variants && doc.variant_based_on && doc.variant_based_on===‘Item Attribute’)