Unable to see all user defined fields in bidirectional relationship

Unable to see all user defined fields in bidirectional relationship

Hi Zoho Team,

I have set-up a lookup field "Supplier_Item_Code" in the form "Create_Sample" in my database "New_Sample_Database".
This field is looking at another database "Sourcing_Database" in the form "Create_Product" field "Supplier_Item_Code"

and I have activated the bidirectional relationship based on ID field

Now in my "Sourcing_Database", form "Create_Product", I want my users to see all the samples related to this product. I can display, "supplier Item code" and "quantity" from the form "Create_Sample" but I want to display more fields like:
"Sample_Type"
"Location"
"Sample_Status"

But I can't see these fields to be displayed

Did I do something wrong?

Thank you

Julien