How To Fix WRF_ARTICLELIST020 - Object buffering: Lock error

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_ARTICLELIST - Mesage Class of Material List

• Message number: 020

• Message text: Object buffering: Lock error

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_ARTICLELIST020 - Object buffering: Lock error ?

  Certainly! Here's a detailed explanation regarding the SAP error message:
  
  SAP Error Message:
  WRF_ARTICLELIST020 Object buffering: Lock error
  
  
  Cause:
  This error typically occurs in the context of object buffering in SAP, especially when working with IS-Retail or similar modules where article master data is buffered for performance reasons.
  
  Object buffering is a mechanism where SAP buffers entire business objects (like articles) in the application server memory to reduce database access.
  The lock error indicates that the system tried to access or update a buffered object but encountered a lock conflict.
  This usually happens when:
  Another user or process holds a lock on the same object.
  The lock was not properly released due to a previous error or system crash.
  There is a deadlock or contention on the buffered object.
  Buffer inconsistencies or stale locks exist.
  
  
  
  
  Explanation:
  
  When an object is buffered, SAP uses enqueue locks to ensure data consistency.
  If a process tries to access an object that is currently locked by another process,