How To Fix WXP439 - Units of measure or distribution keys are copied into nodes further down

WXP439 - Overview

• Message type: E = Error

• Message class: WXP - Retail Planning

• Message number: 439

• Message text: Units of measure or distribution keys are copied into nodes further down

What causes this issue?

You have changed or entered the <DS:DE.WISP_PLMHT>plan unit of measure
</> for the default distribution key for a line.
Dependent entries already exist for the relevant nodes.

System Response

The contents of the fields mentioned above are copied for dependent
entries.

How to fix this error?

Accept the copy function in that you release data or
change the above fields so that they contain the old data once again.

Procedure for System Administrators

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.

WXP439 - Details

• SAP Error Message:
  WXP439 - Units of measure or distribution keys are copied into nodes further down
  
  
  Cause:
  This warning message occurs during the configuration or processing of a work breakdown structure (WBS) or network in SAP Project System (PS) or during the copying of structures in Logistics (e.g., BOMs, routings, or cost planning). It indicates that units of measure (UoM) or distribution keys, which are typically expected only at higher-level nodes, have been copied or assigned to lower-level nodes (child nodes) in the hierarchy.
  In other words, the system detects that UoM or distribution keys are not only maintained at the top-level node but also at subordinate nodes, which might lead to inconsistencies or unexpected behavior in quantity or cost distribution.
  
  Explanation:
  
  Units of Measure (UoM): Usually, quantities are maintained at a summary or parent node, and the system calculates or distributes quantities down the hierarchy.
  Distribution Keys: These are used to allocate costs or quantities