How To Fix SODQ018 - Exclusive TSN not received because object &2 is locked by user &1

SODQ018 - Overview

• Message type: E = Error

• Message class: SODQ - Operational Delta Queue

• Message number: 018

• Message text: Exclusive TSN not received because object &2 is locked by user &1

What causes this issue?

This application has requested an exclusive TSN (Transaction Sequence
Number) but the TSN has not been received. The system tried for &V4&
seconds to lock object &V2& exclusively. However, table &V3& was locked
by user &V1& in a different SAP transaction.

System Response

Once the maximum waiting time of &V4& seconds has expired, the system
will stop trying to lock object &V2& exclusively.

How to fix this error?

Procedure for System Administrators

In the lock table (Tools > Administration ==> Monitor -> Lock Entries or
Transaction SM12), check which work process has locked object &V2& and
how long the object has been locked. Check if the process that set the
lock is still active. For example, an application process that writes to
the delta queue might have set a read lock. Then the process terminates
with a core dump, without deleting the lock. In this case, you can
delete the lock entry from the lock table manually.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SODQ018 - Exclusive TSN not received because object &2 is locked by user &1 ?

  The SAP error message SODQ018 indicates that a transaction or object is locked by a user, preventing the current user from accessing or modifying it. This typically occurs in scenarios where multiple users or processes are trying to access the same object simultaneously, leading to a lock situation.
  
  Cause:
  The error message "Exclusive TSN not received because object &2 is locked by user &1" is caused by:
  
  Locking Mechanism: SAP uses a locking mechanism to ensure data integrity. When a user or process locks an object (like a transaction, table, or document), other users trying to access that object will receive this error message.
  Concurrent Access: If multiple users or processes are trying to access the same object at the same time, the first one to lock it will prevent others from accessing it until the lock is released.
  Long-running Transactions: If a transaction takes a long time to complete, it can hold locks for