Trust registration for claiming exemption u/s 11 and 12

The assessee had not obtained registration u/s 12AB for the AY 2022-23 and hasn't obtained registration even till now. It's entire exemption claimed in the ITR has been disallowed. Is there any remedy available to the assessee where it can claim exemption u/s 11 and 12 for the AY 2022-23, 2023-24 and onwards?