How To Fix CNV_CDMC_CA096 - Enter exactly one system with role 'C'

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDMC_CA - CDMC Clearing Analysis

• Message number: 096

• Message text: Enter exactly one system with role 'C'

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 CNV_CDMC_CA096 - Enter exactly one system with role 'C' ?

  The SAP error message CNV_CDMC_CA096 indicates that the system expects exactly one system with the role 'C' (which typically stands for "Central System") to be defined in the context of a specific configuration or migration process. This error is often encountered during data migration or system conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error occurs when:
  
  There are no systems defined with the role 'C'.
  More than one system is defined with the role 'C'.
  The configuration is incomplete or incorrect, leading to ambiguity in identifying the central system.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check System Configuration:
  
  Go to the relevant transaction or configuration area where systems are defined (e.g., transaction CNV_MBT_COCKPIT or similar).
  Verify the list of systems and their assigned roles.
  
  
  
  Ensure Exactly One Central System:
  
  If there are no systems with role 'C', you need to define one.
  If there are multiple systems with role 'C', you need to remove or change the role of the additional systems so that only one remains.
  
  
  
  Adjust Roles:
  
  If you need to change the role of a system, you can do this in the configuration settings where the systems are defined. Make sure to save your changes.
  
  
  
  Recheck the Configuration:
  
  After making the necessary adjustments, recheck the configuration to ensure that the system with role 'C' is correctly defined.
  
  
  
  Restart the Process:
  
  Once the configuration is corrected, restart the migration or conversion process to see if the error persists.
  
  
  
  Related Information:
  
  Documentation: Refer to the official SAP documentation for the specific migration or conversion tool you are using. This can provide additional context and troubleshooting steps.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide updates and patches.
  Community Forums: Consider searching or posting in SAP community forums or SAP Support for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the CNV_CDMC_CA096 error and proceed with your migration or conversion process.