If your company Finance team has applied the Postcode locations policy rule, the system will check that the postcodes entered for your journeys are valid.
Note: Postcodes are validated using Google Maps. In some cases, new postcodes can be flagged as invalid. Be sure to check that the postcodes you've entered are correct before you submit your mileage expenses.
If you're sure the postcodes entered are all valid but are not being recognised within ExpenseIn, providing your company policy is set to warn, you can still submit your expense by clicking Continue on the policy warning that is displayed.
If your company has set the policy rule to block, the system will not allow you to submit the mileage expense, and you'll need to contact your company's Finance team to ask them how best to proceed.