How To Fix DMC_RT_MSG518 - Invalid field: addition of field &1 failed for BO &2 and structure &3

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 518

• Message text: Invalid field: addition of field &1 failed for BO &2 and structure &3

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_MSG518 - Invalid field: addition of field &1 failed for BO &2 and structure &3 ?

  The SAP error message DMC_RT_MSG518 indicates that there is an issue with the addition of a field in a Business Object (BO) or structure. This error typically arises in the context of Data Migration Cockpit (DMC) or when working with data models in SAP.
  Cause:
  The error can be caused by several factors, including:
  
  
  Field Definition Issues: The field you are trying to add may not be defined correctly in the target structure or Business Object. This could be due to data type mismatches or incorrect field lengths.
  
  
  Incompatibility: The field you are trying to add may not be compatible with the existing fields in the Business Object or structure. This could happen if the field is not supported in the context of the BO or if it violates any constraints.
  
  
  Configuration Errors: There may be configuration issues in the Data Migration Cockpit or the underlying data model that prevent the addition of the field.
  
  
  Missing Dependencies: The field may depend on other fields or configurations that are not present or correctly set up.
  
  
  Solution:
  To resolve the DMC_RT_MSG518 error, you can take the following steps:
  
  
  Check Field Definition: Verify the definition of the field you are trying to add. Ensure that it matches the expected data type, length, and other attributes required by the target structure or Business Object.
  
  
  Review Compatibility: Ensure that the field is compatible with the existing fields in the Business Object or structure. Check for any constraints or rules that may prevent the addition of the field.
  
  
  Validate Configuration: Review the configuration settings in the Data Migration Cockpit. Ensure that all necessary settings are correctly configured and that there are no missing components.
  
  
  Check Dependencies: Investigate if the field has any dependencies on other fields or configurations. Make sure that all required fields and settings are in place.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific Business Object or structure you are working with. There may be specific guidelines or known issues that can help you troubleshoot the error.
  
  
  Testing: After making the necessary adjustments, test the addition of the field again to see if the error persists.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Data Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and guidelines on working with Business Objects and structures.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.