How To Fix MDG_MDF418 - Field &1: Data conversion is necessary

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_MDF - Master Data: Messages

• Message number: 418

• Message text: Field &1: Data conversion is necessary

What causes this issue?

Following a change to the definition of field &V1& it is necessary to
convert the old data for this field before the new attributes can be
activated. This arises, for example, when the following attributes have
been changed:
Conversion exit
Version or time dependency of hierarchies

System Response

You cannot start the application. A data conversion is necessary first.

How to fix this error?

Carry out the required data conversion at field level. To do so, choose
the pushbuttom with the icon @HL@ in the hierarchical detail display at
the level of the &V1& field. If applicable, the system then requests
additional information in a dialog box.

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 MDG_MDF418 - Field &1: Data conversion is necessary ?

  The SAP error message MDG_MDF418, which states "Field &1: Data conversion is necessary," typically occurs in the context of Master Data Governance (MDG) when there is an issue with the data format or type being processed. This error indicates that the system is unable to convert the data in the specified field (&1) to the required format for processing.
  Cause:
  
  Data Type Mismatch: The data being entered or processed does not match the expected data type for the field. For example, if a numeric field is receiving a string value or if a date field is receiving a value that is not in a recognized date format.
  Invalid Data Format: The data format may not conform to the expected format (e.g., date formats, currency formats, etc.).
  Localization Issues: Different locales may have different formats for numbers, dates, etc., which can lead to conversion issues.
  Missing Data: Sometimes, if a required field is empty or null, it can trigger this error during data conversion.
  
  Solution:
  
  Check Data Input: Review the data being entered for the field specified in the error message. Ensure that it matches the expected data type and format.
  Data Format Validation: Validate the format of the data. For example, if the field is a date, ensure that the date is in the correct format (e.g., YYYY-MM-DD).
  Use Conversion Functions: If you are working with custom code or enhancements, consider using appropriate conversion functions to convert data types explicitly.
  Review Field Settings: Check the field settings in the data model to ensure that they are correctly defined and that the data types align with the expected input.
  Localization Settings: Ensure that the system's localization settings are correctly configured to handle the expected formats for the data being processed.
  Error Logs: Check the application logs or error logs for more detailed information about the error, which can provide additional context for troubleshooting.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to MDG and the specific error message for any known issues or patches.
  Documentation: Refer to the SAP MDG documentation for guidelines on data modeling and data governance best practices.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who specializes in SAP MDG for further assistance.