How To Fix CNV_CDMC_CA236 - Enter at least one system with role 'M'

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDMC_CA - CDMC Clearing Analysis

• Message number: 236

• Message text: Enter at least one system with role 'M'

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CDMC_CA236 - Enter at least one system with role 'M' ?

  The SAP error message CNV_CDMC_CA236 indicates that you need to specify at least one system with the role 'M' (which typically stands for "Master" system) in the context of a data migration or conversion process. This error is often encountered during the execution of the SAP Conversion and Data Migration Cockpit (CDMC) or similar tools.
  Cause:
  The error occurs because the system configuration requires at least one source system to be designated as a master system for the data migration process. This is essential for the tool to know where to pull data from or how to structure the migration.
  Solution:
  To resolve this error, follow these steps:
  
  
  Access the Configuration:
  
  Go to the relevant transaction or configuration area where you can manage system roles. This is often found in the SAP GUI under the relevant migration or conversion tool.
  
  
  
  Define a Master System:
  
  Ensure that you have at least one system defined with the role 'M'. This typically involves:
  
  Navigating to the system landscape configuration.
  Adding or editing a system entry to assign it the role of 'M'.
  
  
  
  
  
  Check System Roles:
  
  Verify that the system you intend to use as the master system is correctly configured and has the necessary roles assigned. You may need to check the system's connection settings and ensure it is accessible.
  
  
  
  Save Changes:
  
  After making the necessary changes, save your configuration and try to execute the migration process again.
  
  
  
  Consult Documentation:
  
  If you are unsure about the steps or the configuration, refer to the official SAP documentation or guides related to the specific migration tool you are using.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or updates regarding this error message.
  System Landscape Directory (SLD): Ensure that your systems are correctly registered in the SLD if applicable.
  User Permissions: Make sure that you have the necessary permissions to modify system roles and configurations.
  Migration Cockpit: Familiarize yourself with the SAP Migration Cockpit and its requirements for system roles and configurations.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis team or SAP support for further assistance.