Camunda process migration

Camunda 8 Topics
1

Can we migrate a child process linked to a parent process - referred to as call activity to a new deployed version of that process or is this not possible for operate as my operate is showing me the button as disabled on hovering it shows this “You can only migrate instances that are not called by a parent process”

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Hi @Awais_Sabir,

Based on the official Camunda documentation, child process instances started via call activities should be migratable like regular process instances. The documentation explicitly states:

“You can migrate a called process instance in the same way as a regular process instance.”

The error message you’re seeing (“You can only migrate instances that are not called by a parent process”) doesn’t align with the documented behavior. According to the Process Instance Migration documentation:

  • Active call activities can be migrated like any other element
  • The called (child) process instance is not changed when you migrate the call activity
  • You can migrate a called process instance in the same way as a regular process instance

Additionally, recent Camunda releases have extended migration support to include call activities and child process instances.

Possible reasons for the disabled migration button:

  1. Instance state: The child process instance might not be in an active state (completed/terminated instances cannot be migrated)
  2. No target version: There might not be a suitable target process version deployed for migration
  3. Unsupported elements: The instance might be at BPMN elements that don’t support migration
  4. Version-specific limitation: This could be a limitation in your specific Camunda version

To help troubleshoot:

  • What version of Camunda 8 are you using?
  • What’s the current state of the child process instance?
  • Are you running Camunda 8 SaaS or Self-Managed?
  • Do you have a newer version of the child process deployed?

This behavior seems inconsistent with the documented capabilities, so it might be worth checking if this is a known issue or reporting it if the above conditions don’t apply.

References:

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