diff --git a/frontend/pages/createDocument/edit/[[id]].vue b/frontend/pages/createDocument/edit/[[id]].vue
index 70d2576b..d852c043 100644
--- a/frontend/pages/createDocument/edit/[[id]].vue
+++ b/frontend/pages/createDocument/edit/[[id]].vue
@@ -730,6 +730,12 @@ const setupPage = async () => {
     await router.replace('/createDocument')
     return
   }
+
+  if (route.query.regeneratePdf && route.params.id) {
+    await regenerateMissingPdf()
+    return
+  }
+
   loaded.value = true
 
 }
@@ -1980,38 +1986,7 @@ const closeDocument = async () => {
 
     await saveDocument("Gebucht")
 
-    await generateDocument()
-
-    let fileData = {}
-
-    fileData.project = itemInfo.value.project
-    fileData.createddocument = itemInfo.value.id
-
-    let mappedType = documentStorageFallbackTypes[itemInfo.value.type] || itemInfo.value.type
-
-    const folders = await useEntities("folders").select()
-    console.log(folders)
-    fileData.folder = folders.find(i => i.function === mappedType && i.year === Number(dayjs().format("YYYY"))).id
-
-    const tags = await useEntities("filetags").select()
-    console.log(tags)
-    fileData.type = tags.find(i => i.createdDocumentType === mappedType).id
-
-    function dataURLtoFile(dataurl, filename) {
-      var arr = dataurl.split(","),
-          mime = arr[0].match(/:(.*?);/)[1],
-          bstr = atob(arr[arr.length - 1]),
-          n = bstr.length,
-          u8arr = new Uint8Array(n);
-      while (n--) {
-        u8arr[n] = bstr.charCodeAt(n);
-      }
-      return new File([u8arr], filename, {type: mime});
-    }
-
-    let file = dataURLtoFile(uri.value, `${itemInfo.value.documentNumber}.pdf`)
-
-    await useFiles().uploadFiles(fileData, [file])
+    await uploadGeneratedDocument()
 
     guard.value = false
 
@@ -2021,6 +1996,77 @@ const closeDocument = async () => {
 
 
 
+}
+
+// Erzeugt die PDF aus dem aktuellen Stand und hängt sie an den Beleg an, ohne den Datensatz zu speichern
+const uploadGeneratedDocument = async () => {
+  await generateDocument()
+
+  if (!uri.value) throw new Error("PDF konnte nicht erzeugt werden")
+
+  let fileData = {}
+
+  fileData.project = itemInfo.value.project
+  fileData.createddocument = itemInfo.value.id
+
+  let mappedType = documentStorageFallbackTypes[itemInfo.value.type] || itemInfo.value.type
+
+  const folders = await useEntities("folders").select()
+  console.log(folders)
+  fileData.folder = folders.find(i => i.function === mappedType && i.year === Number(dayjs().format("YYYY"))).id
+
+  const tags = await useEntities("filetags").select()
+  console.log(tags)
+  fileData.type = tags.find(i => i.createdDocumentType === mappedType).id
+
+  function dataURLtoFile(dataurl, filename) {
+    var arr = dataurl.split(","),
+        mime = arr[0].match(/:(.*?);/)[1],
+        bstr = atob(arr[arr.length - 1]),
+        n = bstr.length,
+        u8arr = new Uint8Array(n);
+    while (n--) {
+      u8arr[n] = bstr.charCodeAt(n);
+    }
+    return new File([u8arr], filename, {type: mime});
+  }
+
+  let file = dataURLtoFile(uri.value, `${itemInfo.value.documentNumber}.pdf`)
+
+  await useFiles().uploadFiles(fileData, [file])
+}
+
+const regenerateMissingPdf = async () => {
+  guard.value = false
+  const showPath = `/createDocument/show/${route.params.id}`
+
+  try {
+    const document = await useEntities("createddocuments").selectSingle(route.params.id, "*,files(*)")
+
+    if (document?.state === "Entwurf" || document?.type === "serialInvoices") {
+      toast.add({ title: "PDF kann nur für fertiggestellte Belege nacherzeugt werden", color: "error" })
+    } else if ((document?.files || []).length > 0) {
+      toast.add({ title: "Am Beleg ist bereits ein Dokument angehängt", color: "warning" })
+    } else {
+      // Vertrags- und Mandats-Watcher überschreiben beim Laden die Zahlungsdaten, für die PDF gilt der gespeicherte Stand
+      const restoreStoredPaymentData = () => {
+        itemInfo.value.payment_type = document.payment_type
+        itemInfo.value.outgoingsepamandate = normalizeEntityId(document.outgoingsepamandate)
+      }
+      await nextTick()
+      restoreStoredPaymentData()
+      await nextTick()
+      restoreStoredPaymentData()
+
+      await uploadGeneratedDocument()
+      toast.add({ title: "PDF nacherzeugt", color: "success" })
+    }
+  } catch (error) {
+    console.error(error)
+    toast.add({ title: "PDF konnte nicht nacherzeugt werden", description: error?.data?.error || error?.message, color: "error" })
+  }
+
+  await router.replace(showPath)
 }
 
 const getTextTemplateByType = (type, pos) => {
diff --git a/frontend/pages/createDocument/show/[id].vue b/frontend/pages/createDocument/show/[id].vue
index 5f6af822..338b5bf3 100644
--- a/frontend/pages/createDocument/show/[id].vue
+++ b/frontend/pages/createDocument/show/[id].vue
@@ -110,10 +110,18 @@ const setupPage = async () => {
       links.value = createddocuments.filter(i => i.createddocument?.id === itemInfo.value.id)
     }
 
-    linkedDocument.value = await useFiles().selectDocument(itemInfo.value.files[0].id)
+    if (itemInfo.value.files?.length > 0) {
+      linkedDocument.value = await useFiles().selectDocument(itemInfo.value.files[0].id)
+    }
   }
 }
 
+const canRegeneratePdf = computed(() => itemInfo.value.id
+    && itemInfo.value.state !== 'Entwurf'
+    && itemInfo.value.type !== 'serialInvoices'
+    && Array.isArray(itemInfo.value.files)
+    && itemInfo.value.files.length === 0)
+
 setupPage()
 
 const getStatementLike = (allocation) => allocation?.bankstatement || (typeof allocation?.bs_id === "object" ? allocation.bs_id : null)
@@ -282,6 +290,12 @@ const togglePortalRelease = async () => {
           :loading="costCentresLoading"
           @click="openCostCentres"
       >Kostenstellen bearbeiten</UButton>
+      <UButton
+          v-if="canRegeneratePdf"
+          icon="i-heroicons-document-arrow-down"
+          variant="outline"
+          @click="router.push(`/createDocument/edit/${itemInfo.id}?regeneratePdf=1`)"
+      >PDF nacherzeugen</UButton>
       <!--      <UButton
                 :to="dataStore.documents.find(i => i.createdDocument === itemInfo.id) ? dataStore.documents.find(i => i.createdDocument === itemInfo.id).url : ''"
                 target="_blank"