You are configuring a sip-interface configuration element.
You encounter the error message: Error 409 saving configuration SipInterface.
Identify the cause of the error.
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A. B. C. D. E.B.
The error message "Error 409 saving configuration SipInterface" indicates that there is a conflict in the configuration of the sip-interface configuration element. Specifically, the error code 409 usually refers to a conflict or collision between the current configuration and an existing configuration.
The most likely causes of this error are options A, B, and C, which all involve creating a sip-port element with conflicting parameter values. Option A suggests that the address parameter value of the new sip-port element is the same as another sip-port element, option B suggests that the port parameter value is the same, and option C suggests that the transport-protocol parameter value is the same. If any of these values conflict with an existing sip-port element, it can cause an error when saving the configuration.
Option D suggests that the error may be due to creating a sip-interface element with the same realm-id parameter value as another sip-interface element. This can also cause a conflict in the configuration and result in an error when saving.
Option E suggests that the error may be due to creating a sip-interface element with a different realm-id parameter value from another sip-interface element. While this may not necessarily cause an error, it can cause issues with routing and authentication if the realm-id values are not properly synchronized.
In summary, the most likely cause of the error is a conflict in the configuration of the sip-port or sip-interface elements, specifically with the parameter values of address, port, transport-protocol, or realm-id. It is important to ensure that these values are unique and properly synchronized in the configuration to avoid conflicts and errors.