How To Fix WZRE_PRX157 - Fatal Error in method &1: field symbol &2 not assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: WZRE_PRX - SOA messages from proxy implementations

• Message number: 157

• Message text: Fatal Error in method &1: field symbol &2 not assigned

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WZRE_PRX157 - Fatal Error in method &1: field symbol &2 not assigned ?

  Certainly! Here's a detailed explanation of the SAP error message:
  
  SAP Error Message:
  WZRE_PRX157 Fatal Error in method &1: field symbol &2 not assigned
  
  Cause:
  This error occurs when a field symbol in an ABAP program or method is used without being properly assigned to a data object. In ABAP, field symbols act like pointers or references to data objects, and before you can use a field symbol, it must be assigned to a valid memory area (using the ASSIGN statement).
  If the field symbol is not assigned (i.e., it points to nothing), and the program tries to access or manipulate it, the runtime environment raises this fatal error.
  In the context of the message:
  
  &1 is the method name where the error occurred.
  &2 is the name of the field symbol that was not assigned.
  
  
  Typical Scenarios:
  
  The program tries to dereference a field symbol that was never assigned.
  The ASSIGN statement failed (e.g., the source data object does not exist or is initial), but the program did not check the success of the assignment.
  Dynamic data access where the field symbol is assigned conditionally, but the condition was not met.
  
  
  Solution:
  
  
  Check the ABAP code in the method &1:
  
  Find the field symbol &2.
  Verify that the field symbol is assigned before it is used.
  
  
  
  Use the ASSIGN statement properly:
  
  Example:
  FIELD-SYMBOLS: <fs> TYPE any.
  ASSIGN some_data TO <fs>.
  IF <fs> IS ASSIGNED.
    " Safe to use <fs>
  ELSE.
    " Handle the case when assignment failed
  ENDIF.
  
  
  
  
  Add proper error handling:
  
  Always check if the field symbol is assigned before accessing it.
  If the assignment depends on dynamic conditions, ensure those conditions are met or handle the failure gracefully.
  
  
  
  Debugging:
  
  Use the ABAP debugger to check the assignment status of the field symbol at runtime.
  Trace back why the assignment failed.
  
  
  
  Review related data objects:
  
  Ensure the data object you want to assign to the field symbol exists and is properly initialized.
  
  
  
  
  Related Information:
  
  Field symbols in ABAP are similar to pointers in other programming languages.
  The error is a runtime error and usually causes the program to terminate unless handled.
  This error is common in dynamic programming scenarios, such as generic data processing, dynamic table access, or proxy generation.
  SAP Notes or patches might be available if this error occurs in standard SAP code or generated proxies.
  
  
  Summary:
  
  
  
  Aspect
  Description
  
  
  
  
  Cause
  Field symbol &2 used in method &1 is not assigned before use.
  
  
  Effect
  Runtime fatal error, program termination.
  
  
  Solution
  Ensure field symbol is assigned using ASSIGN and check IS ASSIGNED before usage.
  
  
  Debug
  Use ABAP debugger to verify assignment and data object existence.
  
  
  Notes
  Common in dynamic or proxy-related ABAP code; check SAP Notes if standard code is involved.
  
  
  
  
  If you provide the method name and field symbol name, I can help you with a more specific code example or debugging steps.