How To Fix UGMD418 - Field &1: Data conversion is necessary

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD - FIN 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 UGMD418 - Field &1: Data conversion is necessary ?

  The SAP error message UGMD418 ("Field &1: Data conversion is necessary") typically indicates that there is a mismatch between the data type or format of the data being processed and the expected data type or format in the SAP system. This can occur in various scenarios, such as during data uploads, data transfers, or when processing transactions.
  Cause:
  
  Data Type Mismatch: The data being processed does not match the expected data type for the field. For example, trying to input a string into a numeric field.
  Format Issues: The format of the data may not be compatible with what SAP expects. This can include date formats, decimal separators, or other locale-specific formats.
  Missing Conversion Logic: The system may require specific conversion logic that is not implemented or is incorrectly configured.
  
  Solution:
  
  Check Data Types: Verify the data types of the fields in the source data and ensure they match the expected types in SAP. For example, if a field expects a numeric value, ensure that the data being provided is indeed numeric.
  Format Data Correctly: Ensure that the data is formatted correctly according to SAP's requirements. For instance, if a date is expected in the format YYYY-MM-DD, ensure that the data adheres to this format.
  Use Conversion Functions: If you are writing custom code or using ABAP, consider using conversion functions to convert data types explicitly. For example, using CONVERT_TO_LOCAL_CURRENCY for currency conversions or CONVERT_DATE_TO_EXTERNAL for date formats.
  Check Configuration: Review any relevant configuration settings in SAP that may affect data processing, such as field settings in the data dictionary or settings in the relevant modules.
  Debugging: If you have access to debugging tools, you can trace the execution to identify where the conversion is failing and what specific data is causing the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Refer to SAP documentation for the specific module you are working with to understand the expected data formats and types.
  Community Forums: SAP Community and other forums can be helpful for finding similar issues faced by other users and the solutions they implemented.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth assistance.