diff --git a/aas-web-ui/src/components/SubmodelPlugins/TimeSeriesData.vue b/aas-web-ui/src/components/SubmodelPlugins/TimeSeriesData.vue
index d350de9..a72d2c6 100644
--- a/aas-web-ui/src/components/SubmodelPlugins/TimeSeriesData.vue
+++ b/aas-web-ui/src/components/SubmodelPlugins/TimeSeriesData.vue
@@ -479,7 +479,7 @@
                 let context = 'fetching data from Time Series Database';
                 let disableMessage = false;
                 // send the request
-                this.postRequest(path, content, headers, context, disableMessage).then((response: any) => {
+                this.postRequest(path, content, headers, context, disableMessage, true).then((response: any) => {
                     if (response.success) {
                         // this.navigationStore.dispatchSnackbar({ status: true, timeout: 2000, color: 'success', btnColor: 'buttonText', text: 'Succesfully retrieved data!' });
                         this.convertInfluxCSVtoArray(response.data);
diff --git a/aas-web-ui/src/mixins/RequestHandling.ts b/aas-web-ui/src/mixins/RequestHandling.ts
index 3085d96..c8c8b9e 100644
--- a/aas-web-ui/src/mixins/RequestHandling.ts
+++ b/aas-web-ui/src/mixins/RequestHandling.ts
@@ -93,8 +93,17 @@ export default defineComponent({
         },
 
         // Function to send post Request which returns a Promise
-        postRequest(path: string, body: any, headers: Headers, context: string, disableMessage: boolean): any {
-            headers = this.addAuthorizationHeader(headers); // Add the Authorization header
+        postRequest(
+            path: string,
+            body: any,
+            headers: Headers,
+            context: string,
+            disableMessage: boolean,
+            isTSRequest: boolean = false
+        ): any {
+            if (!isTSRequest) {
+                headers = this.addAuthorizationHeader(headers); // Add the Authorization header
+            }
             return fetch(path, { method: 'POST', body: body, headers: headers })
                 .then((response) => {
                     // Check if the Server responded with content