How To Fix CNV21500035 - Generation subroutine pool full.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV21500 - Messages for HR conversions basis

• Message number: 035

• Message text: Generation subroutine pool full.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV21500035 - Generation subroutine pool full. ?

  The SAP error message CNV21500035: Generation subroutine pool full typically occurs during the execution of a conversion or migration process, particularly when using the SAP Conversion Tools or during data migration activities. This error indicates that the system has reached the limit of the number of subroutine pools that can be generated in the ABAP runtime environment.
  Cause:
  
  Subroutine Pool Limit: Each ABAP program can have a limited number of subroutine pools. When the number of generated subroutine pools exceeds this limit, the system throws this error.
  Large Data Volume: If the data being processed is large or complex, it may lead to the generation of too many subroutine pools.
  Inefficient Code: Poorly optimized code or logic in the migration program can lead to excessive subroutine pool generation.
  
  Solution:
  
  Optimize the Code: Review the ABAP code for the migration or conversion program. Look for opportunities to optimize the logic to reduce the number of subroutine pools generated.
  Increase the Limit: If possible, consider increasing the limit for subroutine pools in the system settings. However, this may require consulting with your SAP Basis team or SAP support.
  Batch Processing: If the migration involves processing a large volume of data, consider breaking it down into smaller batches. This can help manage the number of subroutine pools generated at any one time.
  Check for Updates: Ensure that you are using the latest version of the SAP tools and that all relevant notes and patches have been applied. Sometimes, SAP releases updates that address such issues.
  Consult SAP Notes: Look for specific SAP Notes related to this error message. SAP may have provided specific guidance or fixes for this issue in their knowledge base.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may provide additional insights or solutions for this error.
  Transaction Codes: Familiarize yourself with transaction codes related to data migration and conversion, such as LTMC (Legacy Transfer Migration Cockpit) or LTMOM (Migration Object Modeler).
  Performance Monitoring: Use transaction codes like ST22 (Dump Analysis) and SM21 (System Log) to check for any related dumps or logs that might provide more context on the error.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.