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How to Enable or Disable Shared Activities in Salesforce (Considerations and Data Loss Warnings)

Udgivelsesdato: May 4, 2026
Beskrivelse

This article provides guidance on enabling or disabling the Shared Activities feature in Salesforce, which allows users to relate multiple contacts to events and tasks. Enabling this feature starts a data upgrade process that is not instantaneous and may take up to 48 hours or more depending on org size and activity record count. Disabling the feature after it has been actively used will result in permanent data loss.
It is highly recommended that you thoroughly test this process in a Salesforce sandbox environment before making changes in production. Checking Allow users to relate multiple contacts to events and tasks starts a background data upgrade and is not an instant process.
Important: The upgrade or disable process may change the activity record's SystemModStamp field values. If your organization has integrations or customizations referencing Task and Event SystemModStamp fields, temporarily disable them or account for the values changing.
Generally, the process completes within 1–2 hours, but may take up to 48 hours or more.

When to Log a Case with Salesforce Support

Log a case with Support for any of the following situations:

  1. Admins receive a failure email indicating there was a problem and are advised to contact support.
  2. The following error message appears when viewing the Activity Settings setup page: "The process for rolling back this feature did not complete successfully. Please contact the Salesforce.com Support team to resolve this problem."
  3. The enable process has been running for more than 3 days with no apparent progress.
  4. You need to disable the Shared Activities feature.
  5. When installing a Managed Package, it fails with the error: "Error 'Missing Organization Feature: ManyWho null'"

If Enabling Shared Activities Fails

  • The process automatically attempts to roll back the upgrade changes and reverts activities to their original state.
  • The feature is locked and admins are unable to change its status in Setup until Support investigates.

    Additional Resource:

    Considerations for Enabling Shared Activities
Løsning

To help expedite case handling for rolling back a failed enable, or for disabling Shared Activities, review and acknowledge the following important details before contacting Salesforce Support.

Data Lock Warning

Rolling back a failed enable or disabling Shared Activities may cause temporary organization data locks for activities and their related records. To minimize the potential for user impact, provide a date and time — preferably after hours or during low user traffic — for Support to begin a rollback or to disable the feature.

Data Loss Acknowledgment

  • If enabling the feature has failed, activities should not exist with more than one related contact or lead, and rolling back should not affect data. However, a rollback may still result in data loss in unexpected circumstances.
  • If Shared Activities has been successfully enabled and used for a period of time, disabling it will result in permanent DATA LOSS. Specifically: all activities with more than one related contact or lead will lose all relationships with those records except the primary record. Contact or Lead records are not deleted; only the relationships between them and the activity are removed.

Required Actions Before Contacting Support

  1. Grant Case login access to a Salesforce Support Agent
  2. Provide explicit permission for Support to initiate a manual rollback or disable the feature.
  3. Provide permission for Support to run required data integrity fixers if necessary.
  4. Back up data from the EventRelation and TaskRelation objects using  Export Data prior to disabling Shared Activities.

Note: Currently, Support is not running data integrity fixers due to risk of data loss. The Product Team is working on a solution that will be available in future releases.

Additional Resources (Updated)

Vidensartikelnummer

000380368

 
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Salesforce Help | Article