How To Fix WUSL122 - Maximum number of subroutine pools reached.

WUSL122 - Overview

• Message type: E = Error

• Message class: WUSL - Messages for where-used list

• Message number: 122

• Message text: Maximum number of subroutine pools reached.

What causes this issue?

Transaction SE16N works with subroutine pools. The limit of 36 pools
was exceeded.

System Response

You must restart processing.

How to fix this error?

Restart processing.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

WUSL122 - Details

• The SAP error message WUSL122: Maximum number of subroutine pools reached typically occurs when the system has reached the limit of subroutine pools that can be created in the SAP environment. Subroutine pools are used in ABAP programming to group related subroutines together, and there is a maximum limit set by the system configuration.
  
  Cause:
  
  Excessive Subroutine Pools: The error is usually caused by having too many subroutine pools defined in the system. Each subroutine pool consumes system resources, and when the limit is reached, the system cannot create any new pools.
  Inefficient Coding Practices: Poor coding practices, such as creating unnecessary subroutine pools or not reusing existing ones, can lead to this issue.
  System Configuration: The maximum number of subroutine pools is defined in the system configuration, and it may be set too low for the current usage.
  
  
  Solution:
  
  
  Review and Optimize Code: 
  
  Check the ABAP code for unnecessary subroutine pools. Consolidate related subroutines into