Yamato Transport Error: 500

If a "500" server error appears in a red banner at the bottom of the screen when issuing a Yamato Transport shipping label, the possible causes may include the following.

Please check the details below and take appropriate action.

Possible Causes and Solutions:

1. The API Access Key registered in the Yamato Transport settings on the "Carriers" page of Ship&co is invalid
   → Please log in to Yamato Business Members, then click "送り状発行システムB2クラウド" (Waybill Issuing System B2 Cloud) > "外部システムとの連携" (Integration with External Systems) to check your current valid Yamato Transport API Access Key. Verify that it matches the one registered and saved in Ship&co.
   
   

2. Ship&co subscription plan is not registered or has been canceled
   → There is no active subscription plan. Please register for a valid plan from the "Profile" page.