How To Fix IU004 - Table & is already used by a process

IU004 - Overview

• Message type: E = Error

• Message class: IU - Incremental Conversion (ICNV)

• Message number: 004

• Message text: Table & is already used by a process

What causes this issue?

The table is currently active and is being used by a process. A further
operation is therefore not allowed.

System Response

The program is terminated.

How to fix this error?

Repeat the operation again at a later time.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IU004 - Table & is already used by a process ?

  The SAP error message IU004, which states "Table & is already used by a process," typically occurs when a database table is locked by another process, preventing the current operation from proceeding. This can happen in various scenarios, such as during data updates, table maintenance, or when multiple users are trying to access the same table simultaneously.
  
  Cause:
  
  
  Table Locking: The most common cause is that the table is locked by another transaction or user. This can happen if:
  
  A long-running transaction is holding a lock on the table.
  A previous operation did not release the lock due to an error or was terminated unexpectedly.
  Another user or process is currently accessing the table.
  
  
  
  Database Locking Mechanism: SAP uses a locking mechanism to ensure data integrity. If a table is locked, other processes trying to access it will receive this error.
  
  
  
  Solution:
  
  
  Identify the Lock:
  
  Use transaction code SM12 to check for locks on the table. This transaction allows