How To Fix K6660 - Error: Locking the target data area (data locked by user &1)

K6660 - Overview

• Message type: E = Error

• Message class: K6 - EC-EIS/EC-BP data basis: Data entry and collection

• Message number: 660

• Message text: Error: Locking the target data area (data locked by user &1)

What causes this issue?

In automatic planning, the planning area should be locked against
posting by other users. For performance reasons, only version and
plan/actual indicators are locked. Other users may also have locked the
area for processing.

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?

Repeat the run later.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message K6660 - Error: Locking the target data area (data locked by user &1) ?

  The SAP error message K6660 indicates that a user is trying to access or modify a target data area that is currently locked by another user. This typically occurs in the context of financial or controlling (CO) transactions where data integrity is crucial, and concurrent access is restricted to prevent inconsistencies.
  
  Cause:
  The error occurs when:
  
  A user attempts to execute a transaction that requires access to a specific data area (e.g., cost center, internal order) that is already locked by another user.
  The locking mechanism in SAP is designed to prevent multiple users from making changes to the same data simultaneously, which could lead to data corruption or inconsistencies.
  
  
  Solution:
  To resolve the K6660 error, you can take the following steps:
  
  
  Identify the Locking User: 
  
  Check the user ID mentioned in the error message (e.g., &1). This user is currently holding the lock on the data area.
  You can use transaction code SM12 to view and manage