UTR Number for self assessment

I have applied for UTR number on 20 August 2024 online and still have not receive the UTR number till 23 October 2024. I only need to apply for the split year treatment and I do not have any income after I came to UK. If you don't provide the UTR number to me, does it mean that I don't need to apply self assessment?

Hi,
If you have still not received your UTR, then you will need to contact our Self Assessment team to review this:
Self Assessment: general enquiries
Thank you