How To Fix 63579 - For SU & & & cost collector for & is not unique

63579 - Overview

• Message type: E = Error

• Message class: 63 - Messages for Real Estate Management

• Message number: 579

• Message text: For SU & & & cost collector for & is not unique

What causes this issue?

You have specified a cost collector using the settlement unit key and
the reference date. The system could not determine a unique cost
collector.

System Response

This is probably a programming error.

How to fix this error?

Inform your system administrator.

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

Error message extract from SAP system. Copyright SAP SE.

63579 - Details

• The SAP error message 63579, which states "For SU & & & cost collector for & is not unique," typically occurs in the context of SAP's Project System (PS) or Controlling (CO) modules. This error indicates that there is a conflict or ambiguity regarding the cost collector associated with a specific service unit (SU) or cost object.
  
  Cause:
  
  Duplicate Entries: The error often arises when there are multiple cost collectors assigned to the same service unit or cost object, leading to ambiguity in the system.
  
  Configuration Issues: Incorrect configuration in the cost collector settings or in the assignment of service units can also lead to this error.
  Data Integrity Issues: There may be inconsistencies in the master data or transactional data that result in multiple cost collectors being linked to the same service unit.
  
  
  Solution:
  
  
  Check Cost Collector Assignments:
  
  Navigate to the relevant transaction (e.g., CJ20N for Project Management or KP26 for Cost Planning) and check the