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The TOPIC ID is the UID or User ID of the certificate. This can be obtained using SSLShopper or by executing the following command:
openssl x509 -in MDM_Certificate.pem -text -noout

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Why does the following error message appear in an iOS device when enrolling: “Profile Installation Failed. The server certificate for “https://xxxxxxxxxx/emm/profile” is invalid”?

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This is a common error that is displayed by the iOS device when there is an issue in installing the Profile. Please check and make sure that the following are correct:

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By default, only the .apk for the Android agent is shipped with the EMM pack (in the <EMM_HOME>/repository/deployment/server/jaggeryapps/emm/client_app/ directory). The iOS agent needs to be cloned from GitHub and thereafter the steps mentioned in the documentation need to be followed to be able to obtain the iOS agent app.

Troubleshooting related questions

Why does the following error message occur: "Message: JAXP00010001: The parser has encountered more than "64000" entity expansions in this document; this is the limit imposed by the JDK."?

This error occurs in JDK 1.7.0_45 as all XML readers share the same XMLSecurityManager and XMLLimitAnalyzer. When the total count of all readers hits the entity expansion limit, which is 64000 by default, the XMLLimitanalyzer's total counter is accumulated and the XMLInputFactory cannot create more readers. If you still want to use JDK 1.7.0_45, try restarting the server with a higher value assigned to the DentityExpansionLimit using one of the following methods.

For example:

• Execute the following command
  ./<EMM_HOME>/bin/wso2server.sh -DentityExpansionLimit=1000000
 
• Set the value of JAVA_OPTS in the <EMM_HOME>/bin/wso2server.sh file.

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