How To Fix MN837 - Please activate log updating (See long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 837

• Message text: Please activate log updating (See long text)

What causes this issue?

In order to allow the creation of an update log, the parameter 'MCL'
must be set to the value 'X' in your user data.

System Response

The function cannot be performed as long as the parameter has not been
set.

How to fix this error?

Set the parameter 'MCL' to the value 'X'.

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

In another session, choose "System -> User defaults -> User parameters"
from any menu.
Your current user-specific parameters will be displayed.
In the field "PID" (parameter ID), add the parameter "MCL".
Assign the value "X" to this parameter.
Save the new parameter setting.
Perform the function again.
&DEPENDENCIES&
It is essential that you remember to delete the parameter 'MCL' after
analysis of the update log. Otherwise, logging will also take place in
operative mode, leading increased pressure on system resources and
longer runtimes.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MN837 - Please activate log updating (See long text) ?

  The SAP error message MN837, which states "Please activate log updating," typically occurs in the context of material management and inventory management processes. This error indicates that the system requires log updating to be activated for certain transactions or processes, particularly when dealing with inventory movements or material documents.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Log Updating Not Activated: The log updating feature is not activated for the relevant movement type or transaction.
  Configuration Issues: There may be configuration settings in the SAP system that need to be adjusted to enable log updating.
  User Authorizations: The user may not have the necessary authorizations to perform actions that require log updating.
  
  Solution:
  To resolve the MN837 error, you can take the following steps:
  
  
  Activate Log Updating:
  
  Go to the configuration settings in SAP.
  Navigate to the relevant movement type or transaction settings.
  Ensure that the log updating option is activated. This is typically found in the configuration for Inventory Management under the movement types.
  
  
  
  Check Movement Type Settings:
  
  Use transaction code OMJJ to access the movement type configuration.
  Select the movement type that is causing the error and check the settings related to log updating.
  
  
  
  Review User Authorizations:
  
  Ensure that the user has the necessary authorizations to perform the transaction. This may involve checking roles and profiles assigned to the user.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation or help files related to the specific transaction or movement type to understand the requirements for log updating.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above settings, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MB1A, MB1B, or MB1C for inventory movements.
  Movement Types: Understand the different movement types and their implications on inventory management.
  SAP Notes: Check for any SAP Notes related to the MN837 error for additional insights or patches that may address the issue.
  
  By following these steps, you should be able to resolve the MN837 error and ensure that log updating is properly activated for your transactions.