Error al crear factura desde Polizas

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Traceback (most recent call last):
  File "/home/openerp/openerp/6.0/server/bin/netsvc.py", line 489, in dispatch
    result = ExportService.getService(service_name).dispatch(method, auth, params)
  File "/home/openerp/openerp/6.0/server/bin/service/web_services.py", line 599, in dispatch
    res = fn(db, uid, *params)
  File "/home/openerp/openerp/6.0/server/bin/osv/osv.py", line 122, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/home/openerp/openerp/6.0/server/bin/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/home/openerp/openerp/6.0/server/bin/osv/osv.py", line 167, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/home/openerp/openerp/6.0/modules/policy_maintenance/policy.py", line 160, in do_invoice
    curr = pc_record.client_id.account_kind_pay
  File "/home/openerp/openerp/6.0/server/bin/osv/orm.py", line 294, in __getattr__
    raise AttributeError(e)
AttributeError: "Field 'account_kind_pay' does not exist in object 'browse_record(res.partner, 1078)'"