CLS_S4_CONV001 - Invalid call; Short fields are not allowed in S/4 HANA target mode

SAP Error Message - Details

• Message type: E = Error

• Message class: CLS_S4_CONV - S/4 HANA: Classification Conversion Messages

• Message number: 001

• Message text: Invalid call; Short fields are not allowed in S/4 HANA target mode

Self-Explanatory Message

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AnswerBot

• What is the cause and solution for SAP error message CLS_S4_CONV001 - Invalid call; Short fields are not allowed in S/4 HANA target mode ?

  The SAP error message CLS_S4_CONV001 indicates that there is an invalid call due to the use of short fields in S/4HANA target mode. This error typically arises when you are trying to execute a program or a function module that is not compatible with the data model of S/4HANA, which has stricter rules regarding field lengths and types.
  Cause:
  
  Short Fields Usage: In S/4HANA, the data model has been optimized, and the use of short fields (fields with a length of less than the standard length) is not allowed. This is to ensure data integrity and consistency across the system.
  Legacy Code: The error may occur if you are using legacy ABAP code that was designed for older versions of SAP, where short fields were permissible.
  Data Migration Issues: If you are migrating data from an older SAP system to S/4HANA, the data structure may not comply with the new requirements, leading to this error.
  
  Solution:
  
  Review and Update Code: Check the ABAP code where the error occurs. Ensure that all fields used in the program or function module comply with the S/4HANA data model. Replace any short fields with their appropriate longer counterparts.
  Data Model Compliance: If you are migrating data, ensure that the data being migrated adheres to the S/4HANA data model. This may involve transforming the data to fit the new structure.
  Use of Data Dictionary: Utilize the SAP Data Dictionary (SE11) to check the definitions of the fields being used. Ensure that they are defined correctly and are compatible with S/4HANA.
  Testing: After making changes, thoroughly test the program or function module to ensure that it works correctly without triggering the error.
  Consult Documentation: Refer to SAP's official documentation regarding S/4HANA migration and development guidelines for more detailed information on field lengths and data types.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or fixes related to this error.
  S/4HANA Migration Cockpit: If you are migrating data, consider using the S/4HANA Migration Cockpit, which can help identify and resolve data model issues.
  ABAP Development Guidelines: Familiarize yourself with the latest ABAP development guidelines for S/4HANA to avoid similar issues in the future.
  
  By addressing the use of short fields and ensuring compliance with the S/4HANA data model, you should be able to resolve the CLS_S4_CONV001 error.