eyaltoledano/claude-task-master · error

Updated task missing required fields.

Error message

Updated task missing required fields.

What it means

After building updatedTask from the AI response, updateTaskById validates that title and description are present. The AI must return every required task field; if title or description is missing/empty, the update is aborted to protect tasks.json integrity.

Source

Thrown at scripts/modules/task-manager/update-task-by-id.js:480

					telemetryData: aiServiceResponse.telemetryData,
					tagInfo: aiServiceResponse.tagInfo
				};
			}

			// Full update mode: Use structured data directly
			const aiTask = aiServiceResponse.mainResult?.task;
			if (!aiTask || typeof aiTask !== 'object')
				throw new Error('Received invalid task object from AI.');

			const updatedTask = {
				...aiTask,
				dependencies: aiTask.dependencies ?? [],
				priority: aiTask.priority ?? null,
				details: aiTask.details ?? null,
				testStrategy: aiTask.testStrategy ?? null
			};
			if (!updatedTask.title || !updatedTask.description)
				throw new Error('Updated task missing required fields.');
			// Preserve ID if AI changed it
			if (updatedTask.id !== taskId) {
				report('warn', `AI changed task ID. Restoring original ID ${taskId}.`);
				updatedTask.id = taskId;
			}
			// Preserve status if AI changed it
			if (
				updatedTask.status !== taskToUpdate.status &&
				!prompt.toLowerCase().includes('status')
			) {
				report(
					'warn',
					`AI changed task status. Restoring original status '${taskToUpdate.status}'.`
				);
				updatedTask.status = taskToUpdate.status;
			}
			// Fix subtask IDs if they exist (ensure they are numeric and sequential)
			if (updatedTask.subtasks && Array.isArray(updatedTask.subtasks)) {

View on GitHub (pinned to c0c98d367c)

Solutions

1. Retry with a more capable model or --research mode
2. Verify the task being updated already has title/description so the prompt context is complete
3. Inspect the raw AI response (debug logs) to confirm which field was dropped
4. Re-run with a shorter prompt describing the change

const t = aiServiceResponse?.mainResult?.task;
if (!t?.title || !t?.description) throw new Error('AI response missing title/description');

const hasRequiredFields = (t) => typeof t?.title === 'string' && t.title.trim() !== '' && typeof t?.description === 'string' && t.description.trim() !== '';

try {
  await updateTaskById(...);
} catch (e) {
  if (e.message === 'Updated task missing required fields.') {
    // retry or fall back to manual edit
  } else throw e;
}

When it happens

Trigger: AI response task object lacks title or description (null, undefined, or empty string) even though it is otherwise an object.

Common situations: Model omitting required fields in structured output, prompts truncated by context limits, or custom models that don't honor the JSON schema strictly.

Related errors

• Received invalid task object from AI.
• MFA_VERIFICATION_FAILED
• Failed to initialize services: ${(error as Error).message}
• Invalid format: ${options.format}. Valid formats are: text,
• Failed to fetch tasks from any tag. First error: ${failedTag

AI-assisted analysis of eyaltoledano/claude-task-master@c0c98d367c (2026-08-29). Data as JSON: /api/errors/77fecbb5082e0cf8. Report an issue: GitHub.