How To Fix WRF_DYNAMIC_SELECT004 - A maximum of 36 subroutine pools can be temporarily generated

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_DYNAMIC_SELECT - Dynamic Selection

• Message number: 004

• Message text: A maximum of 36 subroutine pools can be temporarily generated

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_DYNAMIC_SELECT004 - A maximum of 36 subroutine pools can be temporarily generated ?

  Certainly! Here's a detailed explanation of the SAP error message:
  
  SAP Error Message:
  WRF_DYNAMIC_SELECT004: A maximum of 36 subroutine pools can be temporarily generated
  
  Cause:
  This error occurs when the ABAP runtime environment tries to dynamically generate more than 36 subroutine pools during the execution of a program. In SAP, subroutine pools are internal containers for subroutines (FORM routines). When a program dynamically generates many subroutine pools (for example, due to dynamic SELECT statements or dynamic code generation), it can exceed the system limit of 36 temporary subroutine pools.
  This typically happens in scenarios involving:
  
  Dynamic SELECT statements with many different variants.
  Dynamic code generation or dynamic includes.
  Complex reports or programs that generate many dynamic subroutine pools at runtime.
  
  
  Explanation:
  
  SAP limits the number of dynamically generated subroutine pools to 36 to avoid excessive memory consumption and performance degradation.
  When this limit is exceeded, the runtime throws the error WRF_DYNAMIC_SELECT004.
  
  
  Solution / How to Fix:
  
  
  Reduce Dynamic SELECT Variants:
  
  Review the program logic to minimize the number of dynamic SELECT statements or dynamic code blocks.
  Try to consolidate dynamic SELECTs or use static SELECTs where possible.
  
  
  
  Optimize Program Logic:
  
  Refactor the program to avoid generating many dynamic subroutine pools.
  Use internal tables and loops instead of multiple dynamic SELECTs.
  Avoid unnecessary dynamic code generation.
  
  
  
  Check for Program or Custom Code Issues:
  
  If this happens in custom code, review the code for excessive dynamic SELECTs or dynamic FORM calls.
  Simplify or modularize the code.
  
  
  
  SAP Notes and Patches:
  
  Check SAP Notes for any known issues or patches related to this error.
  Sometimes, SAP releases corrections or performance improvements that can help.
  
  
  
  Increase System Limits (Not Recommended):
  
  Increasing the limit of subroutine pools is generally not possible or recommended because it is a hard-coded limit in the SAP kernel.
  Instead, focus on optimizing the program.
  
  
  
  
  Related Information:
  
  Transaction: The error can occur in any transaction or report that uses dynamic SELECTs or dynamic code generation.
  SAP Kernel: The limit is enforced by the SAP kernel.
  Debugging: Use the ABAP debugger to analyze where the dynamic subroutine pools are generated.
  SAP Notes: Search for notes related to WRF_DYNAMIC_SELECT004 or dynamic SELECT issues.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WRF_DYNAMIC_SELECT004: Max 36 subroutine pools can be temporarily generated
  
  
  Cause
  Exceeding the limit of 36 dynamic subroutine pools due to many dynamic SELECTs or code
  
  
  Solution
  Optimize/reduce dynamic SELECTs, refactor code, avoid excessive dynamic code generation
  
  
  System Limit
  Hard-coded limit in SAP kernel, cannot be increased
  
  
  Related Info
  Check SAP Notes, debug program, optimize logic
  
  
  
  
  If you provide the specific program or scenario where this error occurs, I can help you with more targeted advice.