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

CLS_S4_CONV001 - Overview

• 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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Smart SAP Assistant

• 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