instructure/canvas-lms · error · InvalidDataError

Outcome with ID already exists in another unrelated course…

Error message

Outcome with ID %{guid} already exists in another unrelated course or account (%{name})

What it means

Raised by Outcomes::Import#import_outcome when an outcome identified by vendor_guid already exists in a context (course or account) that is not a child/ancestor of the importing context. The import refuses to touch outcomes owned by unrelated contexts, since cross-context modification would corrupt outcome ownership. The existing outcome's context name is included in the message to help locate it.

Solutions

1. Check which context already owns the outcome (the %{name} in the message) and import into that context or a child of it.
2. Change the vendor_guid in the import file so it no longer collides with the unrelated outcome.
3. Delete or re-purpose the pre-existing outcome if it was created by mistake, then re-run the import.
4. Import the outcome at a common ancestor account so both contexts are within the same hierarchy.

Example fix

// before: importing a package with vendor_guid 'X' already owned by Account A, from unrelated Account B
// after: re-key the guid in the import JSON
{
  "vendor_guid": "X-account-B",
  "title": "Outcome"
}

// Ruby: pre-check ownership before importing
def importable?(vendor_guid, context)
  lo = LearningOutcome.find_by(vendor_guid: vendor_guid)
  lo.nil? || context == lo.context || context.account_chain.include?(lo.context)
end

begin
  importer.import_object(...)
rescue Outcomes::Import::InvalidDataError => e
  Rails.logger.warn("Outcome ownership conflict: #{e.message}")
  # skip row or re-key guid and retry
end

When it happens

Trigger: Importing a course/account outcome export whose vendor_guid matches a LearningOutcome in a completely unrelated course or root account; child_context?(context, of: model.context) returns false in import_outcome (lib/outcomes/import.rb:156).

Common situations: Re-importing an outcome package originally exported from a different institution/account; a vendor_guid collision where two courses reuse the same GUID; copying outcome import files between Canvas accounts without re-keying vendor_guids.

Understand the failure class

Background: 'Could not be found', 'does not exist', 'not found in database': the resource-not-found family when an ID, slug, key, or URI lookup comes back empty — this error's family across 20 libraries.

Related errors

• Cannot modify outcome from another context
• Outcome " " has already appeared in this import
• Cyclic reference detected when importing
• Database error ( )
• Error importing outcomes

AI-assisted analysis of instructure/canvas-lms@1c9f0bb801 (2026-09-15). Data as JSON: /api/errors/b6135ec1b2aa468f. Report an issue: GitHub.

Appendix: source

Thrown at lib/outcomes/import.rb:156

      model
    end

    def import_outcome(outcome)
      invalid = outcome.keys.select do |k|
        outcome[k].present? && GROUP_ONLY_FIELDS.include?(k)
      end
      if invalid.present?
        raise InvalidDataError, I18n.t(
          "Invalid fields for an outcome: %{invalid}",
          invalid: invalid.map(&:to_s).inspect
        )
      end

      model = find_prior_outcome(outcome)
      model.context = context if model.new_record?

      unless child_context?(context, of: model.context)
        raise InvalidDataError, I18n.t(
          "Outcome with ID %{guid} already exists in another unrelated course or account (%{name})",
          guid: outcome[:vendor_guid],
          name: model.context.name
        )
      end

      allow_indirect = outcome.key?(:course_id)
      parents = find_parents(outcome, context, allow_indirect:)

      if model.outcome_import_id == outcome_import_id
        raise InvalidDataError, I18n.t(
          'Outcome "%{guid}" has already appeared in this import',
          guid: outcome[:vendor_guid]
        )
      end

      model.vendor_guid = outcome[:vendor_guid]
      model.title = outcome[:title]

View on GitHub (pinned to 1c9f0bb801)