Can anybody give me suggestion for this error, I have used paperformat in Qweb report and i dont know why i got this error please give some guidelines....
<record id="paperformat_custom" model="report.paperformat">
<field name="name">Custom format</field>
<field name="default" eval="True" />
<field name="format">custom</field>
<field name="page_height">90</field>
<field name="page_width">180</field>
<field name="orientation">Portrait</field>
<field name="margin_top">30</field>
<field name="margin_bottom">30</field>
<field name="margin_left">10</field>
<field name="margin_right">10</field>
<field name="header_line" eval="False" />
<field name="header_spacing">20</field>
<field name="dpi">100</field>
</record>
ParseError: "report.paperformat" while parsing /home/umashankar/Uma/Odoo8.0/openerp/addons/b_supplier_report/paperformat.xml:4, near
The format "custom" does not exist in your system. You should use an existing paper format or create a new one through XML.