Please check as follows to verify your employee's brought-forward limit:
Go to the Leave module, Leave Details, and select this employee.
Check the leave policy assigned in the Policy Folder tab, and check the Category that is assigned in the General tab.
Click Setup and select Leave Policy, and select the policy that is assigned for this employee.
Check the Allocation table of the Annual Leave. If you do not know which Allocation Table ID in case you have more than one Annual Leave type in the leave policy, check the category of this employee, and the Allocation ID.
Go to Setup, Allocation Table, and select the Allocation Table.
Check the Brought Forward column to see how many days are capped there.