How To Fix E1220 - Action cannot be executed, parallel changes in WE20 (&1).

SAP Error Message - Details

• Message type: E = Error

• Message class: E1 - Messages for IDoc Basis

• Message number: 220

• Message text: Action cannot be executed, parallel changes in WE20 (&1).

What causes this issue?

This action can only be executed, if no changes are made to the partner
profiles (WE20) at the same time.

System Response

Locking user in transaction WE20: &v1&

How to fix this error?

Close transaction WE20 or ask the other user to close WE20.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E1220 - Action cannot be executed, parallel changes in WE20 (&1). ?

  The SAP error message E1220, which states "Action cannot be executed, parallel changes in WE20 (&1)," typically occurs in the context of the IDoc (Intermediate Document) processing in SAP. This error indicates that there are concurrent changes being made to the same configuration object in transaction WE20, which is used for maintaining partner profiles.
  Cause:
  
  Concurrent Access: The most common cause of this error is that multiple users or processes are trying to modify the same partner profile at the same time. This can happen if two users are editing the same partner profile in WE20 simultaneously.
  Lock Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. When one user is editing a partner profile, the system locks that profile for editing by others. If another user tries to make changes, they will encounter this error.
  
  Solution:
  
  Wait and Retry: If you encounter this error, the simplest solution is to wait for a few moments and then try to execute the action again. This allows the other user or process to complete their changes and release the lock.
  Check for Active Sessions: If you suspect that a session is stuck or not responding, you can check for active sessions in transaction SM66 (Global Work Process Overview) or SM50 (Work Process Overview) to see if another user is editing the same profile.
  Communicate with Team Members: If you are working in a team, communicate with your colleagues to ensure that no one else is making changes to the same partner profile at the same time.
  Use Transaction SM12: If you believe that a lock is lingering due to a session that has ended unexpectedly, you can check and delete the lock entries in transaction SM12. However, be cautious when doing this, as it may lead to data inconsistencies if not handled properly.
  
  Related Information:
  
  Transaction WE20: This transaction is used to maintain partner profiles for IDoc processing. It defines how the system communicates with different partners (e.g., vendors, customers).
  IDoc Processing: IDocs are used for data interchange between SAP systems and external systems. Proper configuration in WE20 is crucial for successful IDoc communication.
  Lock Management: Understanding how SAP handles locks and sessions can help in troubleshooting similar issues in the future. Familiarize yourself with transactions like SM12, SM21 (System Log), and ST22 (Dump Analysis) for deeper insights into system behavior.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or technical team for further investigation.