How To Fix PE578 - Shift group not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: PE - Shift Planning: Messages

• Message number: 578

• Message text: Shift group not unique

What causes this issue?

The shift group assignment is ambiguous in the period specified. Either
the shift group is not assigned to the organizational unit for the
entire period, or more than one shift group has been assigned in the
period.

System Response

It is only possible to edit a period in which the shift group
assignment is unique (i.e. not ambiguous).

How to fix this error?

Choose another period in order to continue editing.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PE578 - Shift group not unique ?

  The SAP error message PE578 "Shift group not unique" typically occurs in the context of time management or personnel administration when the system is unable to determine a unique shift group for a specific employee or time record. This can happen for various reasons, such as overlapping shift definitions or incorrect configuration in the system.
  Causes:
  
  Duplicate Shift Groups: There may be multiple shift groups defined in the system that have the same characteristics or criteria, leading to ambiguity.
  Incorrect Configuration: The configuration of shift groups in the system may not be set up correctly, causing conflicts.
  Employee Assignment Issues: An employee may be assigned to multiple shift groups that overlap or conflict with each other.
  Time Evaluation Settings: The settings for time evaluation may not be properly defined, leading to issues in determining the correct shift group.
  
  Solutions:
  
  
  Check Shift Group Definitions: Review the definitions of the shift groups in the system to ensure that there are no duplicates or overlapping criteria. You can do this in the configuration settings under the relevant time management module.
  
  
  Review Employee Assignments: Check the assignments of employees to shift groups. Ensure that each employee is assigned to a unique shift group that does not conflict with others.
  
  
  Adjust Configuration: If you find that the configuration is incorrect, make the necessary adjustments to ensure that each shift group is unique and clearly defined.
  
  
  Run Time Evaluation: After making changes, run the time evaluation process again to see if the error persists. This can help in identifying if the issue was resolved.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on managing shift groups and resolving related errors.
  
  
  Seek Support: If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like PA30 (Maintain HR Master Data) or PT60 (Time Evaluation) to check employee data and time records.
  Configuration Path: The configuration for shift groups can typically be found under the following path in the SAP IMG: Personnel Management -> Personnel Administration -> Customizing Procedures -> Shift Planning.
  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 identify and resolve the "Shift group not unique" error in SAP.