Pre-Processing Task for Groups Migration
Prepare target recipients before migrating Google Groups.
Last updated: 2025-01-15 How To
Pre-Processing Workflow
📥
Get Groups
Discover source
→
⚙️
Configure
Set target type
→
🔧
Pre-Process
Create & provision
→
📤
Migrate
Transfer content
Overview
The pre-processing task prepares your target recipient before the actual migration begins. After running "Get Groups" to discover your source groups, you can update group settings and launch pre-processing to create the target objects in Office 365.
Pre-Processing Functions
- 1. Creates the target recipient - Either a Shared Mailbox or Unified Group
- 2. Migrates membership - Transfers owners and members to the target
Unified Group Configuration
For Unified Group (Microsoft 365 Group) targets, pre-processing completes these tasks:
👥 Group Creation
- → Applies the "Target name" as the group name and alias
- → Creates a full Microsoft 365 Group with shared inbox, calendar, and files
📧 Email Generation
- → Builds the email address using the alias and target connector domain
👤 Membership Migration
- → Reads source group membership
- → Adds members directly to the Unified Group
Unified Group Best Practices
Choose Unified Groups when you want full Microsoft 365 collaboration features including
shared calendar, document library, and potential Microsoft Teams integration.
Completion Statuses
The pre-processing task concludes with one of the following statuses:
✗ ERROR-PreProcessing
An issue occurred during pre-processing. Check the logs to troubleshoot.
Common causes: insufficient permissions, duplicate names, invalid characters
✓ NOT STARTED
Pre-processing succeeded. You may now initiate migration for this group.
Target recipient is created and ready for content migration
Before Migration
Always verify the pre-processing status shows "NOT STARTED" before launching the
actual content migration. Groups with "ERROR-PreProcessing" status need troubleshooting first.