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Thread → Update

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Overview

The "Thread - Update" operation in this node allows users to modify existing threads within the Plain API system. This includes updating thread metadata such as title, priority, status, assignment, and custom fields. It is useful for managing ongoing conversations or tasks represented by threads, enabling dynamic updates based on workflow logic.

Common scenarios include:

  • Changing the priority of a support ticket thread.
  • Updating the status of a thread to reflect progress (e.g., marking it as done or snoozed).
  • Assigning or unassigning a thread to/from a user.
  • Modifying custom fields associated with a thread to capture additional structured data.

Practical example:

  • A customer support automation workflow detects that a thread requires urgent attention and updates its priority to "Urgent".
  • After resolving an issue, the workflow marks the thread status as "Done" and unassigns the user.

Properties

Name Meaning
Thread ID The unique identifier of the thread to update.
Additional Fields Collection of optional fields to update:
- Title New title for the thread.
- Priority New priority level for the thread. Options: Urgent (0), High (1), Normal (2), Low (3).
- Status New status for the thread. Options: Todo, Snoozed, Done.
- Assign To User User to assign the thread to. Selecting empty will unassign the thread.
- Unassign Thread Boolean flag indicating whether to unassign the thread.
- Update Thread Fields Allows updating multiple custom thread fields with key-value pairs. Each field can be of type String, Boolean, or Enum, with corresponding values.

Output

The output JSON contains the updated thread information reflecting the changes made. Depending on which fields were updated, the output may include:

  • id: Thread identifier.
  • title: Updated thread title.
  • priority: Updated priority value.
  • status: Updated status.
  • assignedTo: Information about the assigned user if any.
  • threadFields: Array of updated custom thread fields with their keys, types, and values.
  • Metadata about the operation context.

No binary data output is produced by this operation.

Dependencies

  • Requires an active connection to the Plain API service.
  • Needs an API authentication credential configured in n8n to authorize requests.
  • Uses GraphQL mutations and queries to perform updates.
  • Some properties load options dynamically via API calls (e.g., users list, thread field schemas).

Troubleshooting

  • Error: "At least one field to update must be specified"
    Occurs if no update fields are provided. Ensure you specify at least one property to change.

  • API error messages returned from Plain API
    These errors include descriptive messages and sometimes field-specific validation errors. Review the error message for details and correct input accordingly.

  • Invalid or missing Thread ID
    The thread ID is required; ensure it is correctly set and corresponds to an existing thread.

  • Permission issues
    If the API credentials lack permissions to update threads, operations will fail. Verify API key scopes and permissions.

  • Dynamic option loading failures
    If user lists or field schemas fail to load, check network connectivity and API availability.

Links and References

Discussion