How To Fix EM116 - Error during processing of legacy system key &1: message not found

SAP Error Message - Details

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 116

• Message text: Error during processing of legacy system key &1: message not found

CAUSE&
An error occurred while the data from legacy system key &V1& was being
processed. The error was identified after transaction &V2& was carried
out.
This can have one of the following causes:
The message entered as the return field for BDC migration object &V3&
was not found.
Message variable &V4& is intial

System Response

Processing of the import file was cancelled because the system assumes
that an incorrect message was entered as the return field for the BDC
migration object.

How to fix this error?

Check the message you entered and the message variable for the
transaction.

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 EM116 - Error during processing of legacy system key &1: message not found ?

  The SAP error message EM116, which states "Error during processing of legacy system key &1: message not found," typically occurs during data migration or integration processes, particularly when dealing with legacy systems. This error indicates that the system is unable to find a specific message or entry associated with the legacy system key provided.
  Causes:
  
  Missing Data: The legacy system key referenced in the error may not exist in the database or the relevant table.
  Incorrect Configuration: There may be a misconfiguration in the data migration settings or mapping that leads to the system not being able to locate the required message.
  Data Inconsistency: The data being migrated may have inconsistencies or errors that prevent the system from processing it correctly.
  Transport Issues: If the data or configuration was transported from another system, there may have been issues during the transport process that led to missing entries.
  
  Solutions:
  
  Check Legacy System Key: Verify that the legacy system key (&1) is correct and exists in the relevant tables. You can do this by querying the database or using transaction codes like SE11 (Data Dictionary) to check the table structure.
  Review Migration Settings: Ensure that the data migration settings are correctly configured. Check the mapping and transformation rules to ensure they align with the source data.
  Data Validation: Validate the data being migrated to ensure there are no inconsistencies or errors. This may involve checking for duplicates, missing values, or incorrect formats.
  Log Analysis: Review the logs generated during the migration process for any additional error messages or warnings that could provide more context about the issue.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool or process you are using, as there may be known issues or additional troubleshooting steps.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. Provide them with the error message, context, and any relevant logs.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE37 (Function Modules), and ST22 (Dump Analysis) for troubleshooting.
  SAP Notes: Search for SAP Notes related to EM116 or the specific migration tool you are using, as they may contain patches or workarounds.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to diagnose and resolve the EM116 error effectively.