fix doc numer increase

qbo_helper.js

@@ -197,8 +197,10 @@ async function makeQboApiCall(requestOptions) {
                 await doRefresh();
                 return await client.makeApiCall(requestOptions);
             }
-            throw new Error(`QBO API Error ${qboFault.code}: ${qboFault.message}${qboFault.detail ? ' - ' + qboFault.detail : ''}`);
+            const err = new Error(`QBO API Error ${qboFault.code}: ${qboFault.message}${qboFault.detail ? ' - ' + qboFault.detail : ''}`);
-        }
+            err.qboCode = qboFault.code;
+            err.qboFault = qboFault;
+            throw err;        }
 
         // ── Kein saveTokens() hier – Token hat sich nicht geändert ──
         return response;

src/services/qbo-service.js

@@ -82,36 +82,50 @@ async function exportInvoiceToQbo(invoiceId, dbClient) { // <-- Nutzt jetzt dbCl
     };
 
     let qboInvoice = null;
+    const MAX_RETRIES = 20;
 
-    for (let attempt = 0; attempt < 5; attempt++) {
+    for (let attempt = 0; attempt < MAX_RETRIES; attempt++) {
         console.log(`📤 QBO Export Invoice (DocNumber: ${qboPayload.DocNumber})...`);
 
-        const response = await makeQboApiCall({
+        try {
-            url: `${baseUrl}/v3/company/${companyId}/invoice`,
+            const response = await makeQboApiCall({
-            method: 'POST',
+                url: `${baseUrl}/v3/company/${companyId}/invoice`,
-            headers: { 'Content-Type': 'application/json' },
+                method: 'POST',
-            body: JSON.stringify(qboPayload)
+                headers: { 'Content-Type': 'application/json' },
-        });
+                body: JSON.stringify(qboPayload)   // innerhalb der Schleife → aktuelle DocNumber
+            });
 
-        const data = response.getJson ? response.getJson() : response.json;
+            const data = response.getJson ? response.getJson() : response.json;
 
-        if (data.Fault?.Error?.[0]?.code === '6140') {
+            // Fault-Fallback, falls makeQboApiCall doch mal nicht wirft
-            console.log(`   ⚠️ DocNumber ${qboPayload.DocNumber} exists, retrying...`);
+            const fault = extractQboFault(data);
-            qboPayload.DocNumber = (parseInt(qboPayload.DocNumber) + 1).toString();
+            if (fault) {
-            continue;
+                const err = new Error(`QBO API Error ${fault.code}: ${fault.message}`);
+                err.qboCode = fault.code;
+                throw err;
+            }
+
+            qboInvoice = data.Invoice || data;
+            if (qboInvoice.Id) break;
+
+            throw new Error("QBO returned no ID: " + JSON.stringify(data).substring(0, 500));
+
+        } catch (err) {
+            if (err.qboCode === '6140') {
+                const oldNum = qboPayload.DocNumber;
+                qboPayload.DocNumber = (parseInt(oldNum) + 1).toString();
+                console.log(`   ⚠️ DocNumber ${oldNum} belegt (evtl. voided), versuche ${qboPayload.DocNumber}...`);
+                qboInvoice = null;
+                continue;
+            }
+            console.error(`❌ QBO Export Fault:`, err.message);
+            throw err;
         }
-        if (data.Fault) {
-            const errMsg = data.Fault.Error?.map(e => `${e.code}: ${e.Message} - ${e.Detail}`).join('; ') || JSON.stringify(data.Fault);
-            console.error(`❌ QBO Export Fault:`, errMsg);
-            throw new Error('QBO export failed: ' + errMsg);
-        }
-        qboInvoice = data.Invoice || data;
-        if (qboInvoice.Id) break;
-
-        throw new Error("QBO returned no ID: " + JSON.stringify(data).substring(0, 500));
     }
 
-    if (!qboInvoice?.Id) throw new Error('Could not find free DocNumber after 5 attempts.');
+    if (!qboInvoice?.Id) {
+        throw new Error(`Keine freie DocNumber nach ${MAX_RETRIES} Versuchen (ab ${nextDocNumber}).`);
+    }
 
     await dbClient.query(
         'UPDATE invoices SET qbo_id = $1, qbo_sync_token = $2, qbo_doc_number = $3, invoice_number = $4 WHERE id = $5',