Do you know how to avoid errors (with Sharegate)?

Even if you get rid of unsupported content before migration, your first dry-run migrations are very likely to include errors. Here are the most common errors and how to fix them.

Document ID Service

Error: Document ID Service feature cannot be automatically activated. Please activate the feature manually from the Site Collection Administration page.

Solution: Active Document ID feature on SharePoint online (target).

Source: https://support.share-gate.com/hc/en-us/articles/115000643448

MicroFeed

Error: Copying the content from a MicroFeed list is not supported. Copying the content to a MicroFeed list is not supported.

Solution: Clean up all “MicroFeed" lists as they are not supported to be migrated to the cloud.

Source: https://support.share-gate.com/hc/en-us/articles/115000600227

Lookup fields

Error: Property Receipt: The following values are unavailable: 'XXXXX'. Please specify another value.

Solution: Disable circular references for lookup fields.

Calculated columns

Error: The formula of a calculated column cannot contain volatile functions like Today and Me.

Solution: Remove Calculated columns using “Me" or “Today" markups (unsupported)

Source: https://support.share-gate.com/hc/en-us/articles/115000600047-The-formula-of-a-calculated-column-cannot-contain-volatile-functions-like-Today-and-Me.

External Content Types

Error: Entity (External Content Type) cannot be found with Namespace = 'xxxxxxxxx', Name = 'xxxxx'.

Solution: Enable/Configure External Content Types if needed on destination (target) .

Orphan users

Error: Property 'xxx': The following users and groups were not found: XXXXX The current user has been assigned.

OR

Property Target Audiences: The Target Audience 'xxxxxxxxxxxxxx' could not be found.

Solution: The error won't stop the migration of the item, but to get rid of it, the missing user needs to be present in target directory (it can be disabled though).

Too many Requests

Error: The remote server returned an error: (429).

Solution: Re-run content migration migrate them. Big items are likely to give this error multiple times. If this happens, simply use content migration for these specific items on a separate migration task.

Custom pages

Error: Warning for version 1.0: Unable to convert WebPart: The content of the WebPart is not in a WebPart Zone for page 'xxxxxxxxxxxxxxxxxxxx'.

OR

Error: Unable to recover source WebParts: You are not authorized to perform the requested operation.

OR

Error: This page contains WebParts for which the correct zone could not be found. They have been assigned to the default zone, and may need to be edited manually.

Solution: Get rid of SharePoint Designer customization on webpart pages.

Managed metadata

Warning: This item has values in managed metadata columns which are not supported by the Insane Mode.

Solution: Remove managed metadata on folders.

ASPX Pages

Warning: The Insane Mode does not support copying ASPX pages. The copy will continue without using Insane Mode.

Solution: you should manually check ASPX pages for errors after migration.