diff --git a/config/package-solution.json b/config/package-solution.json
index 7c28aed..77a63da 100644
--- a/config/package-solution.json
+++ b/config/package-solution.json
@@ -3,7 +3,7 @@
   "solution": {
     "name": "expiry-indicator-client-side-solution",
     "id": "68bb6d2d-9895-45b4-88e8-b98835faa981",
-    "version": "1.0.3.0",
+    "version": "1.0.4.0",
     "includeClientSideAssets": true,
     "skipFeatureDeployment": false,
     "features": [
@@ -11,7 +11,7 @@
         "title": "ExpiryIndicator command set registration",
         "description": "Registers ExpiryIndicator commands for modern lists and document libraries. Does not provision ExpiryDate.",
         "id": "913402af-ab9a-4974-9f86-5c2159ae41db",
-        "version": "1.0.3.0",
+        "version": "1.0.4.0",
         "assets": {
           "elementManifests": [
             "elements.xml"
diff --git a/package.json b/package.json
index 330a344..f6940ef 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "expiry-indicator",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "private": true,
   "engines": {
     "node": ">=6.9.0 <9.0.0"
diff --git a/src/common/ExpiryConfigService.ts b/src/common/ExpiryConfigService.ts
index fbdbe6a..7abd7e9 100644
--- a/src/common/ExpiryConfigService.ts
+++ b/src/common/ExpiryConfigService.ts
@@ -95,9 +95,7 @@ export class ExpiryConfigService {
   private _createConfigurationList(): Promise<IConfigurationListInfo> {
     const body: any = {
       '__metadata': { 'type': 'SP.List' },
-      'AllowContentTypes': false,
       'BaseTemplate': 100,
-      'ContentTypesEnabled': false,
       'Description': 'Technische Konfiguration der ExpiryIndicator-App.',
       'Title': CONFIGURATION_LIST_TITLE
     };
@@ -164,7 +162,13 @@ export class ExpiryConfigService {
       this._configurationListUrl(),
       SPHttpClient.configurations.v1,
       options
-    ).then((): void => undefined);
+    ).then((response: SPHttpClientResponse): Promise<void> => {
+      if (!response.ok) {
+        return responseError(response, 'Konfigurationsliste konnte nicht ausgeblendet werden')
+          .then((error: Error): Promise<void> => Promise.reject(error));
+      }
+      return Promise.resolve();
+    });
   }
 
   private _getConfigurationItem(listId: string): Promise<IConfigurationItem | undefined> {
@@ -202,7 +206,10 @@ export class ExpiryConfigService {
   private _headers(method?: string): any {
     const headers: any = {
       'Accept': 'application/json;odata=verbose',
-      'Content-type': 'application/json;odata=verbose'
+      'Content-type': 'application/json;odata=verbose',
+      // SPFx 1.4.1 defaults to OData 4.0. SharePoint's verbose REST payloads
+      // with __metadata use OData 3.0, especially for write requests on-premises.
+      'OData-Version': '3.0'
     };
     if (method) {
       headers['IF-MATCH'] = '*';
@@ -211,4 +218,3 @@ export class ExpiryConfigService {
     return headers;
   }
 }
-
diff --git a/src/common/ExpiryItemService.ts b/src/common/ExpiryItemService.ts
index c8797b0..a994eae 100644
--- a/src/common/ExpiryItemService.ts
+++ b/src/common/ExpiryItemService.ts
@@ -138,6 +138,7 @@ export class ExpiryItemService {
         headers: {
           'Accept': 'application/json;odata=verbose',
           'Content-type': 'application/json;odata=verbose',
+          'OData-Version': '3.0',
           'IF-MATCH': '*',
           'X-HTTP-Method': 'MERGE'
         },
diff --git a/src/common/RestError.ts b/src/common/RestError.ts
index 58c75ea..4b09a54 100644
--- a/src/common/RestError.ts
+++ b/src/common/RestError.ts
@@ -2,19 +2,29 @@ import { SPHttpClientResponse } from '@microsoft/sp-http';
 
 export function responseError(response: SPHttpClientResponse, operation: string): Promise<Error> {
   return response.text().then((body: string): Error => {
-    let detail: string = body;
+    let detail: string = body || response.statusText || 'Unbekannter SharePoint-Fehler';
     try {
       const parsed: any = JSON.parse(body);
-      detail = parsed.error && parsed.error.message ? parsed.error.message.value : body;
+      const payload: any = parsed.error || parsed['odata.error'] || (parsed.d && parsed.d.error);
+      const message: any = payload && payload.message;
+      if (typeof message === 'string') {
+        detail = message;
+      } else if (message && typeof message.value === 'string') {
+        detail = message.value;
+      } else if (typeof parsed.Message === 'string') {
+        detail = parsed.Message;
+      }
     } catch (error) {
       // Keep the raw response body.
     }
 
-    return new Error(operation + ' (' + response.status + '): ' + detail);
+    const correlationId: string = response.headers.get('SPRequestGuid') ||
+      response.headers.get('request-id') || '';
+    const correlationSuffix: string = correlationId ? ' [Correlation-ID: ' + correlationId + ']' : '';
+    return new Error(operation + ' (' + response.status + '): ' + detail + correlationSuffix);
   });
 }
 
 export function escapeODataString(value: string): string {
   return value.replace(/'/g, "''");
 }
-
diff --git a/src/extensions/expiryIndicator/ExpiryIndicatorFieldCustomizer.manifest.json b/src/extensions/expiryIndicator/ExpiryIndicatorFieldCustomizer.manifest.json
index 8bede9a..4a05954 100644
--- a/src/extensions/expiryIndicator/ExpiryIndicatorFieldCustomizer.manifest.json
+++ b/src/extensions/expiryIndicator/ExpiryIndicatorFieldCustomizer.manifest.json
@@ -4,7 +4,7 @@
   "alias": "ExpiryIndicatorFieldCustomizer",
   "componentType": "Extension",
   "extensionType": "FieldCustomizer",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "manifestVersion": 2,
   "requiresCustomScript": false
 }
diff --git a/src/extensions/expiryIndicatorCommandSet/ExpiryIndicatorCommandSet.manifest.json b/src/extensions/expiryIndicatorCommandSet/ExpiryIndicatorCommandSet.manifest.json
index a2e2909..0cef668 100644
--- a/src/extensions/expiryIndicatorCommandSet/ExpiryIndicatorCommandSet.manifest.json
+++ b/src/extensions/expiryIndicatorCommandSet/ExpiryIndicatorCommandSet.manifest.json
@@ -4,7 +4,7 @@
   "alias": "ExpiryIndicatorCommandSet",
   "componentType": "Extension",
   "extensionType": "ListViewCommandSet",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "manifestVersion": 2,
   "requiresCustomScript": false,
   "items": {