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Hi, I have a plan to integrate PayTabs as our recurring payment. We have successfully created the normal payment request and successfully got the token from the transaction. However, when we tried to create the recurring transaction, we got an error without any explanation. The error message was "Unable to process your request" with error code 422, we have no idea what this means. We have passed the correct token and tran_ref but the response is still the same. Error response { "code": 422, "message": "Unable to process your request", "trace": "PMNT0706.65F87866.00000992" } When I look at the API debug logs, the error was "Invalid terminal", and I still haven't have any idea what does this mean. Any help would be appreciated!