How To Fix CNV_MBT_SHELL201 - Function module call &1 ends with returncode &2 and message &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_SHELL - Shell Creation

• Message number: 201

• Message text: Function module call &1 ends with returncode &2 and message &3

What causes this issue?

A call of a function module returns with an unexpected error.

System Response

The system ends the process of the activity.

How to fix this error?

Analyze the error and start again.

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 CNV_MBT_SHELL201 - Function module call &1 ends with returncode &2 and message &3 ?

  The SAP error message CNV_MBT_SHELL201 typically occurs during the execution of a conversion or migration process, particularly when using the SAP Migration Tool (or similar tools) for data migration. This error indicates that a function module call has ended with a specific return code and message, which can point to various underlying issues.
  Cause:
  The error message CNV_MBT_SHELL201 is generally caused by one of the following:
  
  Function Module Failure: The function module that was called during the migration process encountered an error, leading to a non-zero return code.
  Data Issues: There may be issues with the data being processed, such as invalid data formats, missing required fields, or data integrity violations.
  Configuration Issues: Incorrect configuration settings in the migration tool or the target system can lead to failures in function module execution.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to perform certain actions, leading to function module failures.
  System Performance: Resource constraints or performance issues in the SAP system can also lead to timeouts or failures in executing function modules.
  
  Solution:
  To resolve the CNV_MBT_SHELL201 error, you can follow these steps:
  
  
  Check the Return Code and Message: The error message includes a return code (&2) and a specific message (&3). Analyze these details to understand the exact nature of the error. Look up the return code in SAP documentation or transaction codes like SE37 (Function Module) to get more insights.
  
  
  Review Logs: Check the logs generated during the migration process. You can use transaction codes like SLG1 (Application Log) to find detailed error messages and logs related to the migration.
  
  
  Validate Data: Ensure that the data being migrated is valid and meets the requirements of the target system. Check for any inconsistencies or missing data.
  
  
  Check Configuration: Review the configuration settings of the migration tool and ensure that they are correctly set up for your specific migration scenario.
  
  
  User Authorizations: Verify that the user executing the migration has the necessary authorizations to perform all required actions.
  
  
  System Performance: Monitor system performance and resource usage. If the system is under heavy load, consider running the migration during off-peak hours or optimizing system resources.
  
  
  Consult SAP Notes: Search for relevant SAP Notes that may address known issues related to the migration tool or specific function modules.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP Support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: SE37 (Function Module), SLG1 (Application Log), ST22 (Dump Analysis), SM21 (System Log).
  SAP Notes: Always check the SAP Support Portal for any relevant notes that may provide fixes or workarounds for known issues related to the migration tool or specific function modules.
  Documentation: Review the official SAP documentation for the migration tool you are using, as it may contain specific troubleshooting steps or guidelines.
  
  By following these steps, you should be able to diagnose and resolve the CNV_MBT_SHELL201 error effectively.