Portfolio Holdings imported from a broker, like Zerodha, cannot be manually edited or deleted. This restriction exists because these portfolios are automatically updated with data provided by the broker.

However, you can sync your portfolio with the broker to ensure it reflects the latest holdings. The current holdings will be updated automatically during the synchronization process.

For more details on resyncing your portfolio, refer to this FAQ:

How can I synchronize/update my latest portfolio with my broker?