How To Fix /SCMB/ODM_ORDA420 - A read lock for &1 has already been requested in the same session

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/ODM_ORDA -

• Message number: 420

• Message text: A read lock for &1 has already been requested in the same session

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 /SCMB/ODM_ORDA420 - A read lock for &1 has already been requested in the same session ?

  The SAP error message /SCMB/ODM_ORDA420 A read lock for &1 has already been requested in the same session typically occurs in the context of the SAP Supply Chain Management (SCM) module, particularly when dealing with object locks in the system. This error indicates that a read lock for a specific object (denoted by &1) has already been requested in the same session, and the system does not allow multiple requests for the same lock.
  
  Cause:
  
  Multiple Lock Requests: The most common cause of this error is that the application is trying to acquire a read lock on the same object multiple times within the same session. This can happen if the code logic inadvertently attempts to lock the same object again without releasing the previous lock.
  Concurrency Issues: If multiple processes or threads are trying to access the same object simultaneously, it can lead to locking conflicts.
  Long-Running Transactions: If a transaction takes a