How To Fix W3_TOOL112 - Persistent variable with name &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: W3_TOOL - ITS: Maintenance Messages

• Message number: 112

• Message text: Persistent variable with name &1 already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W3_TOOL112 - Persistent variable with name &1 already exists ?

  The SAP error message:
  W3_TOOL112: Persistent variable with name &1 already exists
  
  Cause:
  This error occurs when there is an attempt to create or define a persistent variable (usually in the context of Web Dynpro or ABAP Web Services) with a name that already exists in the system. Persistent variables are used to store data persistently across different sessions or requests.
  Specifically, the message indicates that the system has detected a duplicate persistent variable name, which is not allowed because each persistent variable must have a unique name.
  
  When does it typically occur?
  
  When developing or activating Web Dynpro components or applications.
  When defining persistent variables in Web Dynpro components or Web Services.
  During transport or import of Web Dynpro components where persistent variables clash.
  When the same persistent variable name is defined multiple times in the same or different components.
  
  
  Solution:
  
  
  Check for Duplicate Names:
  
  Review the persistent variables defined in your Web Dynpro component or application.
  Ensure that the variable name you are trying to create or activate is unique.
  Use transaction SE80 or the Web Dynpro Explorer to inspect persistent variables.
  
  
  
  Rename the Persistent Variable:
  
  If a duplicate exists, rename the new persistent variable to a unique name.
  Avoid using generic or common names that might already be in use.
  
  
  
  Clean Up or Delete Unused Variables:
  
  If the existing persistent variable is obsolete or unused, consider deleting it before creating a new one with the same name.
  
  
  
  Check Transport Requests:
  
  If the error occurs during transport import, check if the transport request contains persistent variables that conflict with existing ones in the target system.
  Coordinate with the development team to resolve naming conflicts.
  
  
  
  Clear Cache / Restart Services:
  
  Sometimes, after changes, the system cache might cause inconsistencies.
  Try clearing the cache or restarting the relevant services (e.g., ICM or Web Dynpro services).
  
  
  
  
  Related Information:
  
  Persistent variables in Web Dynpro are defined in the component controller or context and are used to maintain state.
  The naming convention for persistent variables should be consistent and unique within the scope of the component.
  SAP Note or documentation related to Web Dynpro persistent variables might provide additional guidance.
  Check SAP Help Portal or SAP Community for similar issues and best practices.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  W3_TOOL112: Persistent variable with name &1 already exists
  
  
  Cause
  Duplicate persistent variable name detected
  
  
  Solution
  Rename variable to a unique name; remove duplicates; check transports
  
  
  Context
  Web Dynpro development, persistent variable definition
  
  
  
  
  If you provide the exact context or code snippet where this error occurs, I can help you with more specific guidance.