Custom function in Zoho Flow to use Zoho Analytics API to sync data between Zoho Analytics and Zoho Desk

Hello,

I want to use Refetch ata Endpoint: https://<ZohoAnalytics_Server_URI>/restapi/v2/workspaces/<workspace-id>/datasources/<datasource-id>/sync

In Zoho Desk, we use the Zoho Analytics integration to synchronise data from Desk to Analytics. Since we want to automatically process a report, I want to reload the data via API before the export job is created and the data is sent to another service. That's when I noticed the "Sync Data" function, which seems to do exactly what I want. So in Zoho Flow I created a custom function and set up a connection to Analytics, named "analytics" in this example. So I tested the call as follows:

header = Map();
header.put("ZANALYTICS-ORGID",XXXXXXXXXXX);
refetchData = invokeurl
[
url :"https://analyticsapi.zoho.eu/restapi/v2/workspaces/XXXXXXXXXXX/views/XXXXXXXXXXX/sync"
type :POST
headers:header
connection:"analytics"
];
info refetchData;

Unfortunately, I receive an error message as a result:

"status": "failure",
"summary": "INVALID_OAUTHSCOPE",
"data": {
"errorCode": 8540,
"errorMessage": "This API request cannot be processed using the provided token. Kindly make sure that the token was created using the required scope."
}

The connection that I set up in Zoho Flow has all rights, of course. On the documentation page of the Analytics API, I saw that username and password have to be passed in the CONFIG... what is this about?