How To Fix WN757 - Actual costing needs to be set live; call transaction FCML4H_STARTUP

WN757 - Overview

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 757

• Message text: Actual costing needs to be set live; call transaction FCML4H_STARTUP

What causes this issue?

You have activated actual costing for plant after material ledger was
set live for this plant.

System Response

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

How to fix this error?

You need to generate content for some data structures by running
transaction FCML4H_STARTUP (Set ML Actual Costing as Productive
(retroactively)

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WN757 - Actual costing needs to be set live; call transaction FCML4H_STARTUP ?

  The SAP error message WN757 indicates that actual costing has not been set to "live" in the system. This is a common issue encountered in SAP systems when the actual costing functionality is not activated or properly configured. Below are the details regarding the cause, solution, and related information for this error message.
  
  Cause:
  
  Actual Costing Not Activated: The actual costing functionality in SAP is not activated for the company code or controlling area.
  
  Configuration Issues: There may be configuration issues in the controlling module (CO) that prevent actual costing from being set live.
  Missing Authorizations: The user may not have the necessary authorizations to perform the action required to set actual costing live.
  
  
  Solution:
  To resolve the WN757 error, follow these steps:
  
  
  Activate Actual Costing:
  
  Go to the transaction code OKKN (Activate Actual Costing).
  Select the appropriate company code and activate the actual costing functionality.
  
  
  
  Run the Startup Transaction:
  
  Execute the transaction FCML4H_STARTUP as suggested in the error message. This