So, first of all, I would definitely follow the advice from Kevin regarding understanding your company policy around personal charges and personal use of your corporate card. It may also be good to understand any limitations that you may have internally around personal use of corporate discounts.
Generally speaking, the private sector does not object too much to an individual benefitting from a company discount. In the public sector, this is generally considered to be a violation, as an individual should not be allowed to benefit personally from public funds.
All of this being said, if you have checked on both card policy and internal policy regarding corporate discounts, there is usually some means within a report to flag a company card charge as "personal, do not reimburse". This can either be displayed as a flag on the expense type form itself, or a separate expense type entirely. If you have personal expenses on the report that in total will exceed the personal expense, the personal expense will net against that money. If the personal expense is the only thing on the report, or it exceeds the any amount due employee, then it really depends on how your organization has built this scenario into their concur platform. If they have planned for "amount due company" scenarios, that amount may be posted as a receivable for the employee to pay, or deducted from payroll. Either can be true, which is why you should check in with someone listed as an administrator for your account.
