When processing international orders you might come across the "3425 International importer of record – Postal-State Mismatch" error.
This error relates to an invalid address on the order level: you are either using an incorrect state and/or postal code.
Feel free to follow the step-by-step guide written below or the video guide, as you prefer:
NOTE: Make sure your order is not processed to be able to edit it. If it’s already processed, you will have to void it first.
To do so:
1. Find the order through any of the possible ways (after Import Orders, Batches, Order History, etc) as it applies to the case
2. Click the edit button of the order you wish to change
3. Correct the state and/or postal code in the order
4. Press Save to apply the changes
If the rest of the order information is correct you will be able to process it.