NEW DELHI: Candidates appearing for the Civil Services Examination (CSE) 2026 will get an opportunity to make changes to their application forms with the Union Public Service Commission (UPSC) planning to open a three-day “correction window” as a one-time measure. The correction window will allow aspirants/candidates to rectify mistakes and edit details in the application forms submitted for CSE 2026 and Indian Forest Service (IFoS) Examination, 2026. A similar correction facility was provided last year for candidates of the NDA & NA Examination (II), 2025 and the CDS Examination (II), 2025.The three-day correction window will open after the closing of the online application process. Detailed instructions regarding the exact dates and scope of permissible corrections will be notified on the UPSC website in due course.The UPSC online application portal — which replaced the earlier one-time registration module — consists of four parts, arranged in separate cards on the home page. Three of these – account creation, universal registration and common application form – contain information common to all examinations and can be filled at any time by candidates. The fourth part, i.e. examinations, is the examination-specific module and contains examination notices, the examination application and application status.