### Answer The "Failed to send invitation" error is typically caused by an open/unpaid invoice in one of your workspaces—not necessarily the workspace you're currently trying to invite someone to, but any workspace associated with your account. [(1) ]() Steps to resolve: 1. Check the billing page across all your workspaces (not just the current one) for any open or unpaid invoices [(2) ]() [(1) ]() 2. Even a small outstanding balance (e.g., $2) on any workspace can block invitations across your entire account [(1) ]() 3. Once you pay any outstanding invoices, the invitation functionality should work again If you've verified there are no unpaid invoices: 1. Find your workspace ID (org ID) from your workspace settings page [(3) ]() 2. Share your org ID with Retell support so they can investigate further [(4) ]() [(5) ]() You can reach Retell support here or through [Contact Sales]() . [(4) ]()

​ To learn more, see the sources I considered: [[1] Failed to Send Invitation](https://discord.com/channels/1186424376300679209/1466554262858240100) [[2] Invited to workspace but still cannot access it](https://discord.com/channels/1186424376300679209/1436802393382588597) [[3] Workspace](https://docs.retellai.com/accounts/workspace) [[4] Error when trying to invite members to a workspace](https://community.retellai.com/t/error-when-trying-to-invite-members-to-a-workspace/380) [[5] Hi Retell team,I'm experiencing a persistent issue with workspace invites and would appreciate you](https://discord.com/channels/1186424376300679209/1463106215377768531) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.