Hello @YasuhiroHanda-1129 ,
createOptions parameter is a specification of Azure IoT Edge Device Modules and belongs to the deployment manifest - it enables you to configure the module containers at runtime.
Therefore, Azure IoT Central should comply with the definition in Azure IoT Edge documentation like described here:
In that doc I can't see a mention to "split" to
createOptions01, 02, 03... JSON object if too long, therefore I would suggest you continue using only one JSON Object
createOptions in your Device Template for IoT Edge.
Hope I could help. Thank you!