Cannot create documents via the Extension Data APIs (404) about azure-devops-extension-sdk HOT 2 CLOSED

export async function createPolicy(strategy: string, repo: string, source: string, target: string): Promise<void> {
    var context = SDK.getExtensionContext();
    var token = await SDK.getAccessToken();
    var dataService = await SDK.getService<IExtensionDataService>(CommonServiceIds.ExtensionDataService);
    //var mng = await dataService.getExtensionDataManager(context.extensionId, token); <-- replaced by line below
    var mng = await dataService.getExtensionDataManager(context.extensionId + "." + context.extensionId, token);
    var doc = await mng.createDocument("MergePolicies-" + repo, { strategy: strategy, repo: repo, source: source, target: target });
    console.log(doc);
}