Prevents careless expenses such as claiming taxi rides paid before 10 PM as overtime transportation costs.

When claiming overtime transportation expenses, if the payment was not made with a corporate card or was not used between 10 PM and 6 AM, the receipt will be flagged as \'Review Required\' so an administrator can check it again.

Enforces detailed supporting documentation such as attachments and memos for high-value corporate card or tax invoice payments exceeding 1,000,000 KRW.

For high-value transactions over 1,000,000 KRW paid by corporate card or tax invoice, users must fill in the \'Attachment\' and \'Memo\' fields before they can submit the receipt, ensuring detailed supporting documentation is provided.

Makes weekend corporate card transactions without prior approval clearly visible to administrators and allows them to verify the reason.

If a corporate card is used on Saturday or Sunday, instead of allowing direct submission, the system automatically prompts the user to complete a \'Weekend Use Authorization Form\' explaining the reason for the expense.

Integrated with HR attendance data, this catches errors where someone claims business trip expenses when they are not actually on a business trip.

When business trip expenses are submitted, if even one person included in the claim does not have a \'business trip\' status in their work records for that date, the receipt is flagged as \'Review Required\' since it may have been claimed incorrectly.

Even for the same lunch expense category, different limits are applied — 30,000 KRW for the Sales team and 15,000 KRW for all other departments — managed under a single unified policy.

When lunch expenses are submitted, different limits are checked based on the department. If the Sales team exceeds 30,000 KRW, or if any other department exceeds 15,000 KRW, the receipt is flagged as \'Review Required\' so an administrator can check it again.

Automatically checks whether entertainment expenses exceed the per-person limit (30,000 KRW) as required by internal policies such as the Kim Young-ran Act.

When entertainment expenses are submitted, if the amount per person exceeds 30,000 KRW, it is flagged as \'Review Required\'. Additionally, when someone outside the Sales team submits entertainment expenses, they are required to fill in companion information (who they dined with) as a \'mandatory field\', blocking submission until it is completed.