# Error creating alias after Synctool synchronization

After running a synchronization with the Zivver Synctool, you see the following error:

> Error processing <full_name> (<primary_email>) with status code BadRequest: Error creating alias: Alias is a guest: <alias_email>

## Cause

The <alias_email> has already received one or more Zivver messages as a guest recipient. By default, the Synctool does not merge a guest account with the primary Zivver account.

## Solution

Enable the **Merge guest account into primary account if guest account is an email alias** setting under **Syncing** \> **Synchronization Options** \> **Special functions (only manual sync)**, and run a **Manual Synchronization**.

Note

After the manual synchronization has completed, make sure to disable the setting again.

Updated on 2025-11-14