How To Fix G00657 - Conversion to internal data format failed

SAP Error Message - Details

• Message type: E = Error

• Message class: G00 - SAP Consolidation

• Message number: 657

• Message text: Conversion to internal data format failed

What causes this issue?

The current data row contains the value '&V2&' for the characteristic
&V1&.
This character string could not be converted to an internal data format
using the conversion exit assigned to the characteristic &V1&.

System Response

The system cannot interpret the characteristic value.

How to fix this error?

Check the data format of the characteristic &V1&, for example, by
calling up F1 Help on the field names in the upload method definition.
Format the characteristic values in all the data rows so that they can
be converted to an internal data format. Avoid using special
characters.

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 G00657 - Conversion to internal data format failed ?

  The SAP error message G00657, "Conversion to internal data format failed," typically occurs when there is an issue with data conversion in the SAP system. This error can arise in various contexts, such as during data entry, data import, or when processing transactions. Here are some common causes, potential solutions, and related information:
  Causes:
  
  
  Data Format Issues: The data being processed may not conform to the expected format. This can include incorrect date formats, numeric values with invalid characters, or strings that exceed length limits.
  
  
  Field Length Exceeded: If the data being entered exceeds the defined length of the field in the database, it can lead to conversion errors.
  
  
  Invalid Characters: Special characters or non-ASCII characters in the input data can cause conversion failures.
  
  
  Configuration Issues: Incorrect settings in the system configuration, such as data types or field definitions, can lead to conversion problems.
  
  
  Language/Locale Settings: Mismatches in language or locale settings can affect how data is interpreted and converted.
  
  
  Solutions:
  
  
  Check Data Format: Ensure that the data being entered or imported matches the expected format. For example, check date formats (e.g., DD/MM/YYYY vs. MM/DD/YYYY) and ensure numeric fields do not contain invalid characters.
  
  
  Validate Field Lengths: Review the field definitions in the database and ensure that the data being processed does not exceed the maximum allowed length.
  
  
  Remove Invalid Characters: Clean the input data to remove any special or invalid characters that may cause conversion issues.
  
  
  Review Configuration Settings: Check the configuration settings related to the data being processed. Ensure that field types and definitions are correctly set up.
  
  
  Test with Sample Data: If possible, test the process with a small set of known good data to isolate the issue.
  
  
  Check Language and Locale Settings: Ensure that the language and locale settings in the SAP system are correctly configured and consistent with the data being processed.
  
  
  Related Information:
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. SAP Notes often provide detailed information on known issues and their resolutions.
  
  
  Transaction Codes: Depending on where the error occurs, you may want to look into specific transaction codes related to the process you are working on (e.g., transaction codes for data import, transaction processing, etc.).
  
  
  Debugging: If you have access to debugging tools, you can analyze the program or transaction that is generating the error to identify the exact point of failure.
  
  
  Consult Documentation: Review the SAP documentation for the specific module or functionality you are working with, as it may provide insights into data requirements and constraints.
  
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or technical team for further investigation.