diff --git a/addons/l10n_it_edi/data/invoice_it_template.xml b/addons/l10n_it_edi/data/invoice_it_template.xml
index 729a34d631e..7c803a11e0e 100644
--- a/addons/l10n_it_edi/data/invoice_it_template.xml
+++ b/addons/l10n_it_edi/data/invoice_it_template.xml
@@ -147,7 +147,7 @@
                             </DatiBollo>
                         </DatiGeneraliDocumento>
                         <DatiOrdineAcquisto t-if="record.ref">
-                            <IdDocumento t-esc="record.ref" />
+                            <IdDocumento t-esc="record.ref[:20]" />
                         </DatiOrdineAcquisto>
                         <DatiDDT t-if="record.l10n_it_ddt_id">
                             <!--2.1.8-->