How To Fix FDT_CORE154 - Possible data conversion conflict; &1 to &2

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 154

• Message text: Possible data conversion conflict; &1 to &2

What causes this issue?

Two data objects, for example, results of nested expressions, have a
different type and therefore may not be converted into each other. It
depends on the value that is assigned at runtime for the system to
decide whether the conversion is possible or not. This situation can
also arise if the result data object of a function and the one of the
function's top expression cannot be converted into each other.
For more information, see <DS:TX.FDT_CONVERTIBILITY>BRFplus Data Object
Convertibility</>.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If you are sure that the values used at runtime will always be
convertible, you do not have to take any action. Otherwise, you may want
to change the type of one of the data objects or use a different data
object in order to ensure convertibility at runtime.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE154 - Possible data conversion conflict; &1 to &2 ?

  The SAP error message FDT_CORE154 indicates that there is a possible data conversion conflict when trying to convert data from one format to another. The placeholders &1 and &2 typically represent the source and target data types or formats involved in the conversion process.
  Cause:
  The error can occur due to several reasons, including:
  
  
  Incompatible Data Types: The source data type is not compatible with the target data type. For example, trying to convert a string that contains non-numeric characters into a numeric format.
  
  
  Data Format Issues: The format of the data being converted does not match the expected format. For instance, date formats or currency formats that do not align with the target specifications.
  
  
  Null or Empty Values: Attempting to convert null or empty values can also lead to this error, especially if the target data type does not allow nulls.
  
  
  Custom Logic or User Exits: If there is custom logic or user exits involved in the data conversion process, they may not handle certain cases correctly, leading to conflicts.
  
  
  Solution:
  To resolve the FDT_CORE154 error, you can take the following steps:
  
  
  Check Data Types: Verify that the source and target data types are compatible. Ensure that the data being converted matches the expected format of the target type.
  
  
  Validate Data: Before performing the conversion, validate the data to ensure it meets the requirements of the target format. This may include checking for null values, correct formats, and valid ranges.
  
  
  Adjust Conversion Logic: If you are using custom logic or user exits, review the code to ensure it correctly handles all possible input scenarios, including edge cases.
  
  
  Use Conversion Functions: Utilize built-in SAP conversion functions that are designed to handle specific data type conversions. These functions often include error handling and can provide more robust conversion capabilities.
  
  
  Debugging: If the issue persists, consider debugging the process to identify the exact point of failure. This may involve checking logs or using debugging tools within SAP.
  
  
  Consult Documentation: Review SAP documentation or community forums for any known issues or additional guidance related to the specific data types you are working with.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any updates or patches related to this error message. Sometimes, specific issues are documented with solutions or workarounds.
  Data Dictionary: Familiarize yourself with the data dictionary in SAP to understand the definitions and formats of the data types you are working with.
  SAP Community: Engage with the SAP Community for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the FDT_CORE154 error and implement a suitable solution.