CAT 2024 Application Error Correction Window opening soon. Check how to review application filled and make corrections in Photo, Exam Center, Signatures. CAT 2024 Error correction window is likely to open on September 24 for three days. During this period, you can edit only the specified CAT application errors only Once. This year, you are allowed to edit three errors in your CAT registration and application form. There is no fee to edit the CAT application errors. Check and Read all about the error edit option and step by step process how to rectify the CAT application errors .