When processing an order, you may encounter the "2498 ERROR Recipient/Third party account validation failed" error.
When this error is raised, it indicates that FedEx has rejected the information sent by techSHIP via API due to the account authorization to operate as Third Party.
You can find more details about this error code at: https://www.fedex.com/us/developer/webhelp/fsms/2022/TCR/US/TCR/Appendix_D_Error_codes.htm
Reach your FedEx representative in order to authorize the account you're using to enable operations with the related Third Party account. If needed, you can request the order request and response logs from techSHIP support to facilitate the communication with FedEx support.