This happens because the disbursed voucher has not been imported into accounts. The Pump Bill Verification form only displays data once the disbursed voucher is properly imported.
Although the Driver Fuel Expense appears in the Trip Advance Entry, it will not reflect in Pump Verification until the disbursed voucher is imported into the accounting module.
To resolve this, ensure that the disbursed voucher is imported into accounts. Once imported, the Driver Fuel Expense will appear correctly in the Pump Bill Verification form.