Errors similar to below imply there is an issue at Parcelforce that can not be rectified by the Shiptheory.
Rejected by Parcelforce: Error making call to FedEx: This service is unavailable, please try again in 5 minutes
This error can occur when trying to use international services, such as Global Express.
What Can I Do?
The error message is coming back directly from Parcelforce. There is nothing we can do to bypass this error message.
Please contact the Parcelforce help desk on 03448 006205 and provide them the message exactly as above, along with the service code you have attempted to use and they should be able to advise the best course of action.