Help Center > > FAQs> Secondary Development> FAQs About Application Development> Calling APIs> Application Server Fails to Deliver Commands and Receives Error Code 403

Application Server Fails to Deliver Commands and Receives Error Code 403

Updated at: Jun 26, 2019 GMT+08:00

  1. View the subscription address by choosing Subscription Test on the Developer Center or calling the Querying Subscription in Batches API.

    NOTE:

    The IP address and port number of the callback address of each subscription type under the same application must be the same.

  2. Check whether the callbackurl parameter carried when calling the Creating Device Commands API is the same as the IP address and port number of the subscription callback address. If no, change the values to the same.

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