Urgent: External Editing Access Not Working via Gamma API for Automated Presentation Sharing

Urgent – External Editing Access Not Working via API Hello Gamma Support Team, I hope you are doing well. I’m reaching out because we are experiencing an urgent issue with the Gamma API related to external editing permissions. We are generating presentations programmatically via n8n using the Gamma API. In our HTTP request, we are explicitly setting the sharingOptions to allow external users to edit the generated document. However, when we receive the generated link, the user is not able to edit. Instead, Gamma displays a screen asking the user to join our workspace in order to access editing. This is the JSON payload we are currently sending:

{
  "gammaId": "g_rdd1fs0ll3bsfdq",
  "prompt": "[here put all the information about the wine]. In the top-right area of the header, replace the existing template logo with the provided logo URL. On the left side of the A4 layout, replace the placeholder image with the provided wine image URL. Make sure both images are always replaced.",
  "exportAs": "pdf",
  "sharingOptions": {
    "workspaceAccess": "fullAccess",
    "externalAccess": "edit"
  }
}

Our expectation is that when externalAccess is set to "edit", the recipient should be able to edit the presentation without requiring workspace membership. However, the current behavior forces them to request access or join our workspace, which interrupts our automated workflow. Could you please confirm:

This feature is essential for our workflow, as users need to be able to edit the generated documents directly after creation, without manual invitation steps. Thank you in advance for your help. We appreciate your support and look forward to your guidance. Max J.