get all possible categoriesget all possible productsget all possible media_typesget all possible mediasget all possible zonesget all possible countriesIf a user is provided, return his productLists If customer_type is provided, return . Else rerurn all products.generate a preview of a new ordergenerate a new ordergenerates a new order with the same params as a given order_id or stamp_idreturns a previous order for reprintreturns the journalreturns a receiptget delivery receiptsget billing infoget user licensesget all possible error codes for this APIget customer dataget list payment methodsreturns the current timestamp and request_id.