How To Fix 5Z157 - Error with handles at the CALL interface

5Z157 - Overview

• Message type: E = Error

• Message class: 5Z - IS-HR/PSG Public Sector Payroll - Germany

• Message number: 157

• Message text: Error with handles at the CALL interface

Self-Explanatory Message

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5Z157 - Details

• The SAP error message 5Z157, which indicates "Error with handles at the CALL interface," typically arises in the context of SAP's ABAP programming environment. This error is related to issues with the handling of function calls, particularly when dealing with external function modules or RFC (Remote Function Call) interfaces.
  Causes:
  
  Invalid Handle: The error may occur if the handle being passed to a function is invalid or has not been properly initialized.
  Memory Issues: There could be memory allocation issues or corruption that affect the handles being used.
  Incorrect Function Module: The function module being called may not be correctly defined or may not exist in the system.
  Parameter Mismatch: There may be a mismatch in the parameters being passed to the function module, leading to an invalid state.
  Version Compatibility: If the function module is being called from a different version of SAP or a different system, compatibility issues may arise.
  
  Solutions:
  
  Check Function Module: Verify that