Need Help with Document-Based Authoring in SharePoint – 404 Error on Preview/Publish

Hi everyone, I'm currently working on document-based authoring using SharePoint, but I'm facing an issue and would appreciate some guidance. We are using an organization SharePoint site, and I’ve shared the document with helix@adobe.com by granting edit access. I’ve also added the SharePoint URL in the fstab.yaml file in our GitHub repository. However, when I try to preview or publish the document, I get the following error: 404 – Failed to fetch the page status. Make sure this document is shared with AEM. I’m unsure if this issue is due to using an organization SharePoint or if there’s something else I might be missing in the setup. Does document-based authoring work differently with organization SharePoint sites? Or is there a specific way external users like helix@adobe.com need to be granted access? Could anyone help clarify this and guide me on the correct way to set up document-based authoring in SharePoint for Edge Delivery Services? Thanks in advance!