I found the answer :
this line should be added in ofbiz-component.xml (product):
<classpath type="dir" location="../accounting/config"/>
Sqlien
sqlien wrote
Hi,
how to display PaymentMethodType entity data in french in product/widget/catalog/ProductScreens.xml#EditProductPaymentMethodTypes"
transaltions are set in accounting/config/AccountingEntityLabels_fr.properties
thanks