n8n-io/n8n · error · ValidationError

VALIDATION_ERROR

VALIDATION_ERROR

Error message

Invalid rename node parameters

What it means

Zod schema validation failed on the input to rename_node. The schema (renameNodeSchema) requires nodeId as a string and newName as a non-empty string (min(1)). The catch block relabels the ZodError as VALIDATION_ERROR with the issue list in details.

Source

Thrown at packages/@n8n/ai-workflow-builder.ee/src/tools/rename-node.tool.ts:135

					oldName,
					newName,
					message,
				};

				const stateUpdates = renameNodeInWorkflow(validatedInput.nodeId, oldName, newName);
				reporter.complete(output);
				return createSuccessResponse(config, message, stateUpdates);
			} catch (error) {
				let toolError;

				if (error instanceof z.ZodError) {
					const validationError = new ValidationError('Invalid rename node parameters', {
						field: error.errors[0]?.path.join('.'),
						value: error.errors[0]?.message,
					});
					toolError = {
						message: validationError.message,
						code: 'VALIDATION_ERROR',
						details: error.errors,
					};
				} else {
					toolError = {
						message: error instanceof Error ? error.message : 'Unknown error occurred',
						code: 'EXECUTION_ERROR',
					};
				}

				reporter.error(toolError);
				return createErrorResponse(config, toolError);
			}
		},
		{
			name: RENAME_NODE_TOOL.toolName,
			description: `Rename a node in the workflow. This updates the node's display name and automatically updates all connection references.

USAGE:

View on GitHub (pinned to 5ac6606e81)

Solutions

1. Read details (ZodError.issues) for the first failing path.
2. Pass a valid nodeId UUID and a non-empty newName string.
3. Re-invoke rename_node with corrected input.

Example fix

// before
rename_node.invoke({ nodeId: 'abc', newName: '' });
// after
rename_node.invoke({ nodeId: 'abc-1234', newName: 'Process Orders' });

import { renameNodeSchema } from '@/tools/rename-node.tool';

const parsed = renameNodeSchema.safeParse(input);
if (!parsed.success) { /* surface parsed.error.issues, skip the tool call */ }

function isValidRenameInput(v: unknown): v is { nodeId: string; newName: string } {
  return typeof v === 'object' && v !== null
    && typeof (v as any).nodeId === 'string'
    && typeof (v as any).newName === 'string'
    && (v as any).newName.length > 0;
}

try {
  renameNodeSchema.parse(input);
} catch (e) {
  if (e instanceof z.ZodError) { /* e.issues has field-level detail */ }
}

When it happens

Trigger: Missing nodeId; empty newName; non-string values for either field.

Common situations: The LLM passes an empty string for newName; nodeId omitted; an object passed instead of a UUID.

Related errors

• VALIDATION_ERROR
• VALIDATION_ERROR
• Tool "${this.name}" requires an input schema
• INVALID_CONNECTION
• SELF_CONNECTION

AI-assisted analysis of n8n-io/n8n@5ac6606e81 (2026-08-12). Data as JSON: /api/errors/87ae5b67ab5bae08. Report an issue: GitHub.