how to show specific colums in a many2many field.
this is the code i tried
<group string="Equipment">
<field name="equipment" string="" options="{'no_create': False}"/>
<tree string="Equipment Details">
<field name="name" string="Equipment Name"/>
<field name="serial_no" string="Serial Number"/>
</tree>
</group>
i get the error Field "serial_no" does not exist in model "account.asset"
but without the tree tag i get the serial_no along with other columns as always without errors. how to only show specific columns in a many2many form view