Amended self assessment tax calculation for tax year 2023/24 not available

HMRC have amended my tax calculation for 2023/24 but I have not received either a paper copy of the amendment nor is this visible on my personal tax account for me to check . I have recieved a new payment schedule only . How do I get visibility of the revised calcualtion please

Hi,
If the amended calculation is still not available please contact HMRC to review and issue a copy if needed:
Self Assessment: general enquiries
Thank you.