Editable fields are defined in the Submissions module, which also defines whether the values edited in Submissions override the values from the SMS, and whether you can bulk edit fields.
E313 Student identification code
Code that uniquely identifies the student, such as 109987827.
Linked from the Course admissions data group.
E490 Student status code
Code that identifies the student's status for a unit of study, such as 204 - Paid the full student contribution up-front.
E527 HELP debt incurral date
Date that the student incurred their OS-HELP loan debt, such as 19820203 - 3 February 1982. 00000000 if the student did not incur an SA-HELP loan debt.
E384 Amount charged
Cost of the unit of study to an attending student, such as 800.00.
E381 Amount paid upfront
Amount paid upfront by the student for the unit of study, such as 800.00. 0 for exempt students and overseas students.
E558 HELP loan amount
HELP loan amount for a unit of study or SA-HELP loan. 0 for no HELP loan, exempt students, and overseas students.
Required if the student is enrolled in the unit of study at the end of the census date.
If a student has a HELP loan for the unit of study, the value for the HELP loan amount must equal the value of E384 Total amount charged minus the value of E381 Amount paid upfront. For FEE-HELP loan undergraduate courses and VET courses, this must exclude the loan fee that is reported separately in the E529 Loan fee.