Annual Information Statement (AIS) is an important document because many tax filers reconcile their own data with AIS. However do note that if one has paid any self-assessment tax while filing ITR for FY 2022-23 then the AIS for FY 2023-24 will show this and not AIS for FY 2022-23.
Form 26AS is an annual tax statement which primarily provides details of TDS, and tax collected at source (TCS), along with the corresponding income against which such deduction has been done.
Advance tax, Self-assessment tax, refund, others will not be available in Form 26AS from this year AY 2023-24 (FY 2022-23. Nonetheless, one has to reconcile their tax payment challans, AIS/TIS and file in the correct tax payment information in the ITR.