Company registration can be delayed or rejected because of incorrect company names, incomplete documents, director KYC discrepancies, DSC errors, DIN issues, incorrect registered office details, or mistakes in incorporation forms. This guide explains 10 common reasons for company registration rejection and provides practical steps to identify and correct filing errors. It also covers MCA resubmission notices, required incorporation documents, common mistakes to avoid, and how professional assistance can help entrepreneurs complete the registration process more accurately.