Fine-Tuning the models

I read this sentence in documentation about what models can be fine-tuned:

“Fine-tuning is currently only available for the following base models: davinci , curie , babbage , and ada . These are the original models that do not have any instruction following training (like text-davinci-003 does for example). You are also able to continue fine-tuning a fine-tuned model to add additional data without having to start from scratch.”

Does it mean that text-davinci-003 cannot be fine-tuned?

Yes, that is correct.