How To Fix CNV_DMC_HC039 - Master job is not running

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_HC -

• Message number: 039

• Message text: Master job is not running

What causes this issue?

The SAP Landscape Transformation Replication Server master job is not
running although it was expected to be active.

System Response

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

How to fix this error?

In transaction SM37, search for job /1LT/IUC_REP_MSTR that has the
status <ZK>Cancelled</>. Select the job and reschedule it. If the status
of the job changes to <ZK>Cancelled</> immediately, check the messages
on the tab <ZK>Application Logs</> in transaction LTRC, and check for
runtime errors in transaction ST22.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_HC039 - Master job is not running ?

  The SAP error message CNV_DMC_HC039 indicates that the master job for a data migration or conversion process is not currently running. This error typically arises in the context of SAP Data Migration Cockpit (DMC) or during data migration projects where multiple jobs are managed in a master-slave configuration.
  Causes:
  
  Job Not Started: The master job may not have been started, or it may have been terminated unexpectedly.
  Job Scheduling Issues: There could be issues with the job scheduling or job management in the SAP system.
  System Errors: There may be underlying system errors or resource constraints that prevent the job from running.
  Configuration Issues: Incorrect configuration settings in the DMC or related components may lead to this error.
  Authorization Issues: The user may not have the necessary authorizations to start or manage the job.
  
  Solutions:
  
  Start the Master Job: Check if the master job is running. If not, manually start it using transaction codes like SM37 (Job Monitoring) or DMC (Data Migration Cockpit).
  Check Job Logs: Review the job logs for any errors or warnings that might indicate why the job is not running. This can provide insights into what went wrong.
  Review Configuration: Ensure that the configuration settings for the data migration process are correct. This includes checking the settings in the DMC and any related components.
  Check System Resources: Ensure that the system has sufficient resources (CPU, memory, etc.) to run the job. If the system is under heavy load, consider scheduling the job during off-peak hours.
  Authorization Check: Verify that the user has the necessary authorizations to execute and manage the job. If not, consult with your SAP security team to grant the required permissions.
  Restart the System: In some cases, a system restart may resolve underlying issues that are preventing the job from running.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 for job monitoring, DMC for accessing the Data Migration Cockpit, and SM21 for system logs.
  SAP Notes: Check SAP Notes for any known issues or patches related to the CNV_DMC_HC039 error. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review the official SAP documentation for the Data Migration Cockpit and related tools to ensure that you are following best practices for job management.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.