How To Fix SO819 - Substitute has already been defined in the specified period

SAP Error Message - Details

• Message type: E = Error

• Message class: SO - SAPoffice: message texts

• Message number: 819

• Message text: Substitute has already been defined in the specified period

What causes this issue?

The substitute specified is already defined in your substitute list for
this period.

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?

Change the substitute or substitution period.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SO819 - Substitute has already been defined in the specified period ?

  The SAP error message SO819, which states "Substitute has already been defined in the specified period," typically occurs in the context of the SAP system when dealing with substitutes for employees or resources. This error indicates that there is an attempt to assign a substitute for a person or resource during a time period where a substitute has already been defined.
  Cause:
  
  Duplicate Substitution Entry: The primary cause of this error is that there is already an existing substitution entry for the specified period. This means that the system has detected that a substitute has already been assigned for the same time frame.
  Incorrect Date Range: The dates you are trying to assign for the substitute may overlap with an existing entry.
  Configuration Issues: There may be issues with how the substitution functionality is configured in the system.
  
  Solution:
  
  
  Check Existing Substitutions: 
  
  Navigate to the substitution management area in SAP (usually found under the "Personal Management" or "Organizational Management" modules).
  Look for existing substitutions for the employee/resource in question and verify the date ranges.
  
  
  
  Modify or Delete Existing Substitution:
  
  If you find an existing substitution that overlaps with the new one you are trying to create, you can either modify the existing entry (if appropriate) or delete it if it is no longer needed.
  
  
  
  Create a New Substitution:
  
  If the existing substitution is valid and should remain, you will need to create a new substitution for a different time period that does not overlap with the existing one.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or help resources for specific instructions on managing substitutions, as the process may vary depending on the version of SAP you are using.
  
  
  
  Check Configuration: 
  
  If you suspect that the issue may be related to system configuration, consult with your SAP administrator or technical team to ensure that the substitution functionality is set up correctly.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like PA30 (Maintain HR Master Data) or PA20 (Display HR Master Data) to view and manage employee data, including substitutions.
  User Roles and Permissions: Ensure that you have the necessary permissions to create or modify substitutions in the system.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the SO819 error and successfully manage substitutions in your SAP system.