I'm getting an error when attempting to create an Indexer for Sharepoint Online Indexer

Question

I'm getting the following error when attempting to create an Indexer for Sharepoint Online Indexer:

"Error with data source: A configuration issue is preventing authentication - check the error message from the server for details. You can modify the configuration in the application registration portal. See https://aka.ms/msal-net-invalid-client for details. Original exception: AADSTS7000215: Invalid client secret provided. Ensure the secret being sent in the request is the client secret value, not the client secret ID, for a secret added to app '3a2ab40b-f942-4b1e-8bf3-e9c5f79bb24f'. Trace ID: c217420b-24c1-4d5c-9291-ce6a4aab0f00 Correlation ID: 5257faf2-3c85-4bc2-a6ea-0342b1338399 Timestamp: 2025-03-09 15:10:15Z Please adjust your data source definition in order to proceed."

I'm using the following API endpoint: /indexers?api-version=2024-07-01

I've registered an app (in Entra) with id 3a2ab40b-f942-4b1e-8bf3-e9c5f79bb24f, and given the app a secret. I've also created a key in the keyvault.

I've successfully created a datasource (Sharepoint), and an Index.

The payload I'm sending to the endpoint is as follows.

Headers:

Content-Type: application/json
api-key:

Answer 1

Hi @Matthew Robinson
I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to accept the answer. 

Ask: I'm getting an error when attempting to create an Indexer for Sharepoint Online Indexer
Solution:

I originally created my datasource with an early (preview) API version, rather than 2024-07-01, which I was using in an attempt to create my indexer.

I recreated everything using ?api-version=2024-11-01-preview, and the error dissappeared.

Btw, I think it's currently only possible to specify "sharepoint" as a datasource type if you're using a preview version of the API

 Please don’t forget to Accept Answer and Yes for "was this answer helpful" wherever the information provided helps you, this can be beneficial to other community members. 

Answer 2

Ok, I fixed this.

Looks as though it was all my fault too :D

I originally created my datasource with an early (preview) API version, rather than 2024-07-01, which I was using in an attempt to create my indexer.

I recreated everything using ?api-version=2024-11-01-preview, and the error dissappeared.

Btw, I think it's currently only possible to specify "sharepoint" as a datasource type if you're using a preview version of the API