Do you have any question about this error?
Stop googling SAP errors. Use our Free Essentials plan instead - no credit card needed. Start Now →
Message type: E = Error
Message class: VMC_PROFILING - Message Class for VMC Profiling UI
Message number: 021
Message text: No reference chains found for class &1
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.
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.
VMC_PROFILING021
- No reference chains found for class &1 ?The SAP error message VMC_PROFILING021 indicates that there are no reference chains found for the specified class in the context of the SAP system's profiling or performance analysis tools. This error typically arises when the system is unable to trace the dependencies or references for a particular class, which can hinder performance analysis or debugging efforts.
Cause:
- Class Not Used: The specified class may not be instantiated or used in the application, leading to a lack of reference chains.
- Missing Dependencies: The class might have dependencies that are not properly defined or are missing, preventing the system from establishing reference chains.
- Profiling Configuration: The profiling or performance analysis tool may not be correctly configured to capture the necessary data for the class in question.
- System State: The system might be in a state where it cannot gather profiling information, possibly due to a lack of runtime data or incorrect settings.
Solution:
- Check Class Usage: Ensure that the class is being used in the application. If it is not, consider whether it should be or if it can be removed.
- Review Dependencies: Verify that all dependencies for the class are correctly defined and available. This includes checking for any missing or incorrectly configured components.
- Profiling Configuration: Review the configuration settings for the profiling tool. Ensure that it is set up to capture the necessary data for the class in question.
- Re-run Profiling: If the class is used and dependencies are correct, try re-running the profiling tool after making any necessary adjustments to the configuration.
- Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this can sometimes resolve underlying issues with profiling tools.
- Consult Documentation: Refer to SAP documentation or support resources for specific guidance related to the profiling tool you are using.
Related Information:
If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
Get instant SAP help. Sign up for our Free Essentials Plan.
VMC_PROFILING020
The name already has a suffix
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
VMC_PROFILING019
You must select a name
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
VMC_PROFILING022
VMC profiling function not available until Kernel Release 7.10
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
VMC_PROFILING023
No entry matches '&1'
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.