Why the system stopped you

The system refuses some things. Every refusal is deliberate, every one names what went wrong, and none of them can be worked around by using a different screen — the rules sit on the records themselves, not in the forms.

This page lists what the school will be stopped from doing, why, and what to do instead.

Enrolment and placement

The system says	Why	What to do
This child cannot be enrolled until these documents are uploaded and verified	The school undertook not to admit a child whose required papers are unverified. Verified, not merely uploaded.	Collect and verify the named documents, or change the rule if the school no longer requires it
Section 4A is full for 2026–27: 30 of 30 seats are taken	Nobody holds four hundred class sizes in their head	Raise the section's capacity, or place the child in another section
This section does not take students of this gender	A safeguarding control in a gender-segregated school. It is checked at enrolment, at promotion and in bulk reallocation.	Place the child in a section of their own gender
No academic year is active for this school	There is nothing to enrol the child into	Activate the year
This child is already enrolled in 2026–27	One enrollment per child per year	Open the existing enrollment
Only an active enrollment can be withdrawn / completed / transferred out	A draft enrollment was never live; there is nothing to end	Confirm it first, or delete the draft

Applications and interviews

The system says	Why	What to do
Interview slot is full	A slot has a capacity, and a parent turned away at the door cannot be corrected afterwards	Use another slot, or raise the capacity
Interview slot is not open for booking	The slot is closed or cancelled	Reopen it, or use another
Interview slot is reserved for other grades	The morning is for a different year group	Use a slot for this child's grade
Choose an interview slot before scheduling it	Nothing to schedule into	Pick a slot
Record the interview result before completing it	A completed interview with no result is a stage nobody can act on	Write the result
This application has to be accepted before it can be enrolled	The pipeline is a sequence	Accept it first
This application has already been converted into a student	Converting twice would create a second file for one child	Work on the student and their enrollment
An overlapping interview slot is refused	One interviewer cannot be in two places	Move one of the slots. Slots that merely touch are fine.

The academic year

The system says	Why	What to do
Another year is already the active year for this school	Two years offering themselves for enrolment is how a child gets registered into the wrong one	Close the current year first
Only an active academic year can be closed
Another year is currently running. Close it before reopening this one	Same reason	Close the running year
Invoices have been posted into this year	Reopening would put the school's books back into a period it has already reported on	Do not reopen. Correct what needs correcting in the current year.

Fees

The system says	Why	What to do
This account is no longer a draft. Reset it to draft before re-applying a fee structure	An opened account has been shown to a family; rebuilding it underneath them would change what they were told	Reset it, if no invoices exist
No published fee structure exists for this grade in this year	An account cannot be priced from a draft price list	Publish the structure
This account charges nothing. Apply a fee structure before opening it		Apply the structure
This account has nobody to address	An invoice needs a payer	Flag a guardian as payer on the child
This account has to be open before it can be invoiced		Open it
This account already has invoices. Cancel them before raising new ones	Two sets of invoices for one year is double billing	Cancel the existing ones, or work on them
This account has invoices raised against it (on Reset to Draft)		Cancel them first
This award has not been approved yet		Approve it
This child has no fee account for this year yet	An award needs somewhere to land	Confirm the enrollment, which raises the account
Invoicing is refused where a nationality policy promises tax relief that is not set up	The system will not bill a child it cannot bill correctly	Complete the tax setup behind the policy
This voucher number has already been used at this school	A receipt number identifies one payment	Use the next voucher

Attendance and leave

The system says	Why	What to do
The date is refused as a non-school day	A register row on a closed day lowers a child's percentage for a day nobody was expected	Check the school week and holidays on the academic year
This grade is marked period by period. Choose the period		Choose it
This grade is marked once a day. Leave the period empty		Clear it
There is nobody to mark	The class has no active enrollments for that year	Check the class and the year
Minutes late on a row that is not Late	A late-coming report counting rows and one summing minutes would disagree	Set the status to Late, or clear the minutes
Only a submitted request can be approved / rejected		Submit it first
A closed year's register cannot be deleted	It is the school's record of that year	Nothing. This one is absolute.
One child cannot be marked twice for the same day (or the same period)	Two rows for one day is two different answers to one question	Correct the existing row — reopening the register screen shows it

Transport

The system says	Why	What to do
The academic year is closed, so no bus seat can be allocated		Allocate in the open year
Route 3 is full: 45 of 45 seats are taken		Add a bus, raise the route capacity, or use another route
This stop already collects its limit of children	A stop limit is a safety limit	Use a nearby stop, or raise the limit
Only an active allocation can be ended
End or cancel this allocation before resetting it to draft	An active allocation means a child is on a bus	End it, then reset
A second active allocation for the same child	One child, one bus seat, one year	End the first one; both rows are kept

Staff

The system says	Why	What to do
A reviewer cannot review themselves	A review signed by its own subject is worse than no review, because it looks like one	Name the actual reviewer
A subject cannot be assigned to a grade that does not study it	Otherwise it turns up as a timetable nobody can explain, or a report card row with no marks	Correct the grade list on the subject, or the assignment

Documents

The system says	Why	What to do
Attach the file before marking this document as uploaded	An uploaded document with no file is a row that reads as done	Attach the scan
This document has not been uploaded yet and cannot be verified		Upload it first

One thing worth understanding about all of these

Every rule on this page lives on the record, not on the screen that happens to be in front of you. Enrolment, conversion from an application, a promotion and a data import all pass through the same checks. A rule implemented once in each of four screens is a rule with three holes in it.