Marks should not be empty. If the Student is Absent mention "A".
While downloading the template, you can view the format and the student
details.
If any data does not meet the above rules, an error message will be shown.
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For each course, ensure that all marks assigned are less than 60. If a
student is absent, record their result as 'A' (Absent). Marks must not exceed 60 under any
circumstances, and any numerical mark should be a valid value greater than or equal to 0. No
other characters or symbols are allowed in the marks column