No, it will not affect your result. There are many other details that are being checked by the examiner such as roll number and subject name. If the invigilator does not find the subject code, they will use other details to cross-check. However, if you are still confused, you can inform your school authorities regarding this matter.

Hello,

Forgetting to write the subject code in the Karnataka SSLC exam is usually not a major issue, as exam authorities can often identify the paper through other details. However it may cause processing delays or complications. It's best to double check and fill in all required details to avoid any prblms.