Message type: E = Error
Message class:  HR_SE_PA - Message Class for PA 
Message number: 040
Message text: Record cannot be modified as it has been changed
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.
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.
The SAP error message "HR_SE_PA040 Record cannot be modified as it has been changed" typically occurs in the context of Human Resources (HR) data management, particularly when dealing with personnel records. This error indicates that the record you are trying to modify has been changed by another user or process since it was last read, leading to a conflict.
Cause: Concurrent Changes: Another user or process has modified the same record after you retrieved it for editing. Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. If a record is locked by another transaction, you may not be able to modify it. Data Consistency: The system is designed to maintain data integrity, and if it detects that the record has been altered, it will prevent further modifications to avoid inconsistencies.
Solution: Refresh the Data: Before making changes, refresh the data to ensure you are working with the most current version of the record. You
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
HR_SE_PA039 New Cost Distribution Record Created for WorkAgreementID &1!
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HR_SE_PA038 Cost Distribution Cancelled for WorkAgreementID &1!
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HR_SE_PA041 Cost Distribution Changed for WorkAgreementID &1!
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HR_SE_PA042 Unable to process your request, Please contact System Admin!
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.