How To Fix CN858 - Maintain a work center to calculate duration

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 858

• Message text: Maintain a work center to calculate duration

What causes this issue?

If you enter a value for work in a unit that is smaller than "day", then
the system uses the operating time from the work center to calculate
the duration.

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

Maintain the key for a work center, or change the unit.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN858 - Maintain a work center to calculate duration ?

  The SAP error message CN858 ("Maintain a work center to calculate duration") typically occurs in the context of project management or production planning when the system is unable to calculate the duration of a task or operation due to the absence of a defined work center. Here’s a breakdown of the cause, solution, and related information for this error:
  Cause:
  
  Missing Work Center: The most common cause of this error is that the work center associated with the operation or task is not defined in the system.
  Incorrect Configuration: The work center may exist, but it might not be properly configured or linked to the relevant task or project.
  Project Definition Issues: The project or task may not have been set up correctly, leading to missing links to necessary resources like work centers.
  
  Solution:
  
  
  Maintain Work Center:
  
  Go to the transaction code CR01 (Create Work Center) or CR02 (Change Work Center).
  Ensure that the work center is created and properly configured with all necessary details, including capacity, cost center, and relevant parameters.
  Assign the work center to the relevant task or operation in your project.
  
  
  
  Check Project Settings:
  
  Navigate to the project definition in transaction code CJ20N (Project Builder).
  Ensure that the work center is assigned to the correct WBS (Work Breakdown Structure) element or activity.
  
  
  
  Review Task/Operation Details:
  
  Check the details of the task or operation where the error occurred. Ensure that the work center field is filled in correctly.
  
  
  
  Consult Documentation:
  
  If you are unsure about the configuration, refer to SAP documentation or consult with your SAP administrator or functional consultant for guidance on setting up work centers.
  
  
  
  Related Information:
  
  Work Center Configuration: Work centers are crucial in SAP for calculating capacities, scheduling, and costing. They are typically linked to cost centers and production resources.
  Transaction Codes:
  
  CR01: Create Work Center
  CR02: Change Work Center
  CR03: Display Work Center
  CJ20N: Project Builder
  
  
  SAP Modules: This error is often encountered in modules related to Project System (PS), Production Planning (PP), and Controlling (CO).
  
  By following these steps, you should be able to resolve the CN858 error and ensure that your project or operation can calculate durations correctly. If the issue persists, further investigation into the specific project setup and configurations may be necessary.