How To Fix MDQ_MDC_MSG020 - Key structure &1 required for table generation does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: MDQ_MDC_MSG - Messages for Evaluation Process

• Message number: 020

• Message text: Key structure &1 required for table generation does not exist

What causes this issue?

The key structure &V1& that is required for the generation of Rule
Evaluation table &V2& does not exist in the Data Dictionary.

System Response

The system aborts the table generation process.

How to fix this error?

The key structure &V1& needs to be added to the Data Dictionary. You can
either create the structure manually using transaction <LB>SE11</>, or
you can generate the structure automatically by selecting the row that
contains the entry &V1& in the <ZH>Model Maintenance</> table and
selecting <ZH>Apply Selected</>.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MDQ_MDC_MSG020 - Key structure &1 required for table generation does not exist ?

  The SAP error message MDQ_MDC_MSG020 indicates that a key structure required for the generation of a table does not exist. This error typically occurs in the context of Master Data Governance (MDG) or when working with Multi-Dimensional Data (MDC) in SAP systems.
  Cause:
  The error can be caused by several factors:
  
  Missing Key Structure: The key structure that is referenced in the configuration or data model does not exist in the system.
  Incorrect Configuration: There may be a misconfiguration in the data model or the settings related to the key structure.
  Transport Issues: If the key structure was recently transported from another system, it may not have been transported correctly or completely.
  Development Environment: If you are working in a development environment, the key structure may not have been created or activated.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Key Structure:
  
  Go to the relevant transaction (e.g., SE11 for Data Dictionary) and check if the key structure exists.
  If it does not exist, you may need to create it or ensure that it is properly defined.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the MDG or MDC area to ensure that the key structure is correctly referenced.
  Make sure that all necessary components are activated and configured properly.
  
  
  
  Transport Check:
  
  If the key structure was supposed to be transported, check the transport logs to ensure that it was included in the transport request.
  If it was not transported, you may need to manually create it in the target system or re-transport it.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific version of your SAP system for any known issues or additional steps that may be required.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. Provide them with the error message and any relevant details about your configuration.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), and MDG-specific transactions may be relevant.
  SAP Notes: Search for SAP Notes related to MDG and MDC for any patches or updates that may address this issue.
  Documentation: Review the SAP Help Portal for guidance on configuring key structures in MDG or MDC.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.