How To Fix CM_EXPERT302 - An error occurred when reading the component data

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EXPERT - Messages for Expert

• Message number: 302

• Message text: An error occurred when reading the component data

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EXPERT302 - An error occurred when reading the component data ?

  The SAP error message CM_EXPERT302, which states "An error occurred when reading the component data," typically indicates an issue with accessing or retrieving data related to a specific component in the SAP system. This error can arise from various underlying causes, and here are some common reasons, potential solutions, and related information:
  Causes:
  
  Data Inconsistency: There may be inconsistencies in the data stored in the database, which can prevent the system from retrieving the necessary component data.
  Authorization Issues: The user may not have the necessary authorizations to access the component data.
  System Configuration: Incorrect configuration settings in the SAP system can lead to issues when trying to read component data.
  Database Issues: Problems with the database, such as connectivity issues or corruption, can also lead to this error.
  Missing or Incomplete Data: The component data may be missing or incomplete, which can trigger this error when the system attempts to read it.
  
  Solutions:
  
  Check Authorizations: Ensure that the user has the appropriate authorizations to access the component data. You can do this by reviewing the user's roles and permissions in the SAP system.
  Data Consistency Check: Run consistency checks on the relevant data. This can often be done using transaction codes like SE11 (Data Dictionary) or SE14 (Database Utility) to check for inconsistencies.
  Review Configuration Settings: Verify the configuration settings related to the component in question. Ensure that all necessary settings are correctly configured.
  Database Health Check: Check the health of the database. This may involve running database diagnostics or consulting with your database administrator to ensure there are no underlying issues.
  Check for Missing Data: Investigate whether the component data is missing or incomplete. If necessary, restore the data from backups or re-enter the missing information.
  SAP Notes and Support: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE14 (Database Utility), and SU53 (Authorization Check) to help diagnose the issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to identify the cause of the CM_EXPERT302 error and implement a suitable solution.