What the cause and how to fix this error :
"Canot be located in parent view"
[Update]
This is the code, I can't add new tab after Accounting :
<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>
<record model="ir.ui.view" id="product_form_view">
<field name="name">product</field>
<field name="model">product.product</field>
<field name="type">form</field>
<field name="inherit_id" ref="product.product_normal_form_view"/>
<field name="arch" type="xml">
<xpath expr="//page[@string='Accounting']" position="after">
<page string="KPB" col="1">
<group col="4">
<field name="color"/>
</group>
</page>
</xpath>
</field>
</record>
</data>
</openerp>
Provide more information. No-one has a glass orb around here, so a single sentence does not help anyone to solve your problem.