I am adding documents to Azure Search Index VIA .NET Core console app. When I am adding new documents it over-writes the old document and finally index has only one document.

I am using IndexDocumentsBatch method to upload list of documents in to the index. When I upload 5 documents the index has only last document from the list of 5 documents.

 var inputDocuments = DemoObjects();
 var sampleDocuments = await GetSampleDocumentsAsync(openAIClient, inputDocuments);
 await searchClient.IndexDocumentsAsync(IndexDocumentsBatch.Upload(sampleDocuments));