How To Fix CNV_CDMC_CA201 - Communication failure while performing the remote comparison

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDMC_CA - CDMC Clearing Analysis

• Message number: 201

• Message text: Communication failure while performing the remote comparison

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_CA201 - Communication failure while performing the remote comparison ?

  The SAP error message CNV_CDMC_CA201 indicates a communication failure that occurs during a remote comparison process, typically in the context of data migration or conversion using the SAP Conversion Tools. This error can arise due to various reasons, including network issues, configuration problems, or system settings.
  Causes:
  
  Network Issues: There may be connectivity problems between the source and target systems, such as firewalls blocking communication or network outages.
  Configuration Errors: Incorrect settings in the RFC (Remote Function Call) destination or in the configuration of the SAP system can lead to communication failures.
  Authorization Issues: The user executing the remote comparison may not have the necessary authorizations to perform the operation.
  System Load: High load on either the source or target system can lead to timeouts or dropped connections.
  Version Mismatch: Incompatibility between the versions of the systems involved in the comparison can also cause communication failures.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is stable network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  Review RFC Configuration: 
  
  Go to transaction SM59 and check the RFC destination settings. Ensure that the connection type is correct and that the target system is reachable.
  Test the RFC connection to ensure it is working properly.
  
  
  Verify Authorizations: Ensure that the user has the necessary authorizations to perform the remote comparison. Check roles and profiles assigned to the user.
  Monitor System Performance: Check the performance of both the source and target systems. If either system is under heavy load, consider scheduling the comparison during off-peak hours.
  Check for Version Compatibility: Ensure that both systems are running compatible versions of SAP. If there are discrepancies, consider upgrading or patching the systems.
  Review Logs: Check the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the failure.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation related to the data migration or conversion tools being used, as they may contain specific guidelines for resolving communication issues.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.