How To Fix CMT2187 - A transaction is open

SAP Error Message - Details

• Message type: E = Error

• Message class: CMT2 - Add-On Version: Message Class in CM Environment

• Message number: 187

• Message text: A transaction is open

What causes this issue?

You want to carry out an action to make the system post data in the
database. An example of this is when you start a structure explosion in
a baseline. However, you previously changed some data, but did not save
the changes.

System Response

The action is canceled.

How to fix this error?

First save your changes, or discard them. Repeat the action once again.

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 CMT2187 - A transaction is open ?

  The SAP error message CMT2187, which states "A transaction is open," typically occurs when a user attempts to perform an action that requires a transaction to be closed or finalized, but there is an open transaction that is preventing this action. This can happen in various contexts, such as during data entry, processing, or when trying to execute certain functions in SAP.
  Cause:
  
  Open Transaction: The most common cause is that there is an open transaction that has not been completed or saved. This could be due to a user leaving a transaction open or a system process that has not finished.
  Session Management: Sometimes, multiple sessions or windows may be open, and the system is unable to process the new request because it is still waiting for the previous transaction to complete.
  Lock Entries: There may be lock entries in the database that prevent the transaction from being completed.
  User Errors: Users may inadvertently leave transactions open or fail to save their work.
  
  Solution:
  
  Check Open Transactions: Review the current transactions that are open. You can do this by navigating to the transaction you were working on and checking if there are any unsaved changes.
  Complete or Cancel the Transaction: If you find an open transaction, either complete it by saving or cancel it if it is no longer needed.
  Log Off and Log Back In: Sometimes, simply logging off and back into the SAP system can clear any session-related issues.
  Use Transaction Codes: You can use transaction codes like SM12 to check for lock entries and SM21 to view system logs for any related issues.
  Contact Support: If the issue persists, it may be necessary to contact your SAP support team or system administrator for further assistance. They can help identify if there are any underlying issues with the system or user permissions.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage lock entries), SM21 (to check system logs), and SE38 (to run reports).
  User Training: Ensure that users are trained on how to properly complete transactions and understand the importance of saving their work.
  System Performance: Sometimes, performance issues can lead to transactions hanging. Monitoring system performance and addressing any bottlenecks can help prevent this error.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message, as there may be specific fixes or updates available.
  
  By following these steps, you should be able to resolve the CMT2187 error and prevent it from occurring in the future.