saas-platform/frontend/saas-web/app/view/sale/saleIn/FormPanelModel.js

Ext.define('saas.view.sale.saleIn.FormPanelModel', {
    extend: 'saas.view.core.form.FormPanelModel',
    alias: 'viewmodel.sale-salein-formpanel',
    data: {
        pi_class: '销售退货单'
     }
});