How To Fix 3G399 - Acc.assignment object replaced by current master cost center for employee

3G399 - Overview

• Message type: E = Error

• Message class: 3G - Payroll: International

• Message number: 399

• Message text: Acc.assignment object replaced by current master cost center for employee

What causes this issue?

The account assignment object check identified that this object is not
valid for cost accounting and cannot be posted. For this reason, it has
been posted to the employee's master cost center.

Error message extract from SAP system. Copyright SAP SE.

3G399 - Details

• The SAP error message 3G399 indicates that the assignment object for a cost center has been replaced by the current master cost center for an employee. This typically occurs in the context of personnel cost planning or when processing payroll data, where the system expects a specific cost center assignment for an employee but finds that it has been updated or changed.
  
  Cause:
  
  Cost Center Changes: The employee's cost center assignment may have been changed in the master data, leading to a mismatch with the data being processed.
  Data Consistency Issues: There may be inconsistencies between the employee's master data and the cost center assignments in the planning or payroll data.
  
  Configuration Issues: The system configuration may not be set up to handle changes in cost center assignments correctly.
  
  
  Solution:
  
  
  Check Master Data: Verify the employee's master data in the SAP system to ensure that the cost center assignment is correct and up to date.
  
  Use transaction