How To Fix DMC_MDS_MAINT_EVENT120 - Output list list index invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_MDS_MAINT_EVENT - message class for dynamic maint event proc

• Message number: 120

• Message text: Output list list index invalid

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.

What else can you do?

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 DMC_MDS_MAINT_EVENT120 - Output list list index invalid ?

  The SAP error message DMC_MDS_MAINT_EVENT120 with the description "Output list list index invalid" typically occurs in the context of Data Management and Data Quality processes within SAP systems, particularly when dealing with Master Data Governance (MDG) or Data Management components.
  Cause:
  This error usually arises due to one of the following reasons:
  
  
  Invalid Index Reference: The system is trying to access an index in an output list that does not exist or is out of bounds. This can happen if the data being processed is not structured as expected or if there are issues with the data being passed to the function.
  
  
  Data Integrity Issues: There may be inconsistencies or corruption in the data being processed, leading to an invalid state when the system attempts to generate the output list.
  
  
  Configuration Issues: Incorrect configuration settings in the Data Management or MDG setup can lead to this error, especially if the output list is not properly defined.
  
  
  Software Bugs: There may be bugs in the specific version of the SAP software you are using, which could lead to unexpected behavior.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Data Input: Review the data being processed to ensure that it is complete and correctly formatted. Look for any missing or invalid entries that could lead to an invalid index.
  
  
  Review Configuration: Verify the configuration settings related to the Data Management or MDG processes. Ensure that all necessary parameters are correctly set and that the output list is properly defined.
  
  
  Debugging: If you have access to debugging tools, you can trace the execution of the program to identify where the invalid index is being referenced. This can provide insights into what is causing the issue.
  
  
  SAP Notes and Support: Check the SAP Support Portal for any relevant SAP Notes or patches that address this specific error. There may be known issues with certain versions of the software that have been documented.
  
  
  Consult Documentation: Review the official SAP documentation for Data Management and MDG to ensure that you are following best practices and that your implementation aligns with recommended guidelines.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including any relevant logs or screenshots.
  
  
  Related Information:
  
  SAP Notes: Always check for SAP Notes related to your specific version of the software, as they may contain fixes or workarounds for known issues.
  Community Forums: Engage with the SAP Community or other forums where users discuss similar issues. You may find others who have encountered the same error and can share their solutions.
  System Logs: Review system logs (transaction SLG1) for additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to diagnose and resolve the DMC_MDS_MAINT_EVENT120 error effectively.