How To Fix W4023 - &: & run schedule header exists

SAP Error Message - Details

• Message type: E = Error

• Message class: W4 - Messages for material discontinuation

• Message number: 023

• Message text: &: & run schedule header exists

What causes this issue?

A run schedule header still exists for the material.

System Response

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

How to fix this error?

Delete the run schedule header for the material.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W4023 - &: & run schedule header exists ?

  SAP Error Message:
  
  W4023 & : & run schedule header exists
  
  Meaning / Cause:
  This warning message indicates that a run schedule header already exists for the given parameters (such as job name, variant, or other scheduling criteria). In other words, when you try to create or schedule a new run schedule (often related to batch jobs, report executions, or background processing), the system detects that a run schedule header with the same key or identifier is already present in the system.
  This situation typically arises when:
  
  You attempt to create a duplicate run schedule for the same job or report.
  A previous run schedule was not deleted or properly closed.
  There is an overlap or conflict in scheduling parameters.
  
  
  Where it occurs:
  
  In transaction codes related to job scheduling or report execution (e.g., SM36, SM37, or custom scheduling transactions).
  When using batch input sessions or custom programs that manage run schedules.
  In scenarios involving background job scheduling or report variants.
  
  
  Solution / How to resolve:
  
  
  Check Existing Run Schedules:
  
  Use the relevant transaction or program to display existing run schedules.
  Identify the existing run schedule header that conflicts with your new schedule.
  
  
  
  Delete or Modify Existing Run Schedule:
  
  If the existing run schedule is obsolete or no longer needed, delete it.
  If it is still needed, consider modifying your new schedule parameters to avoid duplication.
  
  
  
  Use Unique Identifiers:
  
  Ensure that the job name, variant, or scheduling parameters are unique to avoid conflicts.
  If you are using custom programs, add logic to check for existing run schedules before creating new ones.
  
  
  
  Check for Locks or Incomplete Runs:
  
  Sometimes, incomplete or locked run schedules cause this message.
  Use transaction SM12 to check for locks related to run schedules and release them if appropriate.
  
  
  
  Consult Documentation or SAP Notes:
  
  Check SAP Notes for any known issues related to this message.
  Review the documentation of the specific module or program you are working with.
  
  
  
  
  Related Information:
  
  Message Class: W4 (Warning messages related to scheduling or run schedules)
  Transaction Codes: SM36 (Define Background Job), SM37 (Job Monitoring), or custom scheduling transactions.
  Tables: Run schedule headers are often stored in custom or standard tables depending on the application; check your system's data dictionary or program documentation.
  SAP Notes: Search for message number W4023 in the SAP Support Portal for any specific notes or patches.
  
  
  Summary:
  The warning W4023 & : & run schedule header exists means you are trying to create a run schedule that already exists. To fix it, identify and delete or modify the existing run schedule, ensure uniqueness in scheduling parameters, and check for locks or incomplete schedules.
  
  If you provide the exact context or transaction where this message appears, I can help with more specific instructions.