update

ts/formats/ubl/generic/ubl.encoder.ts

@@ -455,8 +455,9 @@ export class UBLEncoder extends UBLBaseEncoder {
       const itemNode = doc.createElement('cac:Item');
       invoiceLineNode.appendChild(itemNode);
       
-      // Description
-      this.appendElement(doc, itemNode, 'cbc:Description', item.name);
+      // Description - use description field if available, otherwise use name
+      const description = (item as any).description || item.name;
+      this.appendElement(doc, itemNode, 'cbc:Description', description);
       this.appendElement(doc, itemNode, 'cbc:Name', item.name);
       
       // Seller's item identification

ts/formats/ubl/xrechnung/xrechnung.decoder.ts

@@ -196,7 +196,7 @@ export class XRechnungDecoder extends UBLBaseDecoder {
         incidenceId: invoiceId,
         from: seller,
         to: buyer,
-        subject: `Invoice ${invoiceId}`,
+        subject: notes.length > 0 ? notes[0] : `Invoice ${invoiceId}`,
         items: items,
         dueInDays: dueInDays,
         reverseCharge: false,