How To Fix /PM0/ABB_MESSAGES252 - &1 has been entered more than once

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/ABB_MESSAGES -

• Message number: 252

• Message text: &1 has been entered more than once

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/ABB_MESSAGES252 - &1 has been entered more than once ?

  The SAP error message /PM0/ABB_MESSAGES252 indicates that a specific entry (usually a reference to a document, item, or code) has been entered more than once in a context where duplicates are not allowed. This error typically arises in modules related to project management, asset management, or similar areas where unique identifiers are crucial for data integrity.
  Cause:
  
  Duplicate Entries: The most common cause is that the same entry (e.g., a project number, asset number, or other identifiers) has been entered multiple times in a transaction or data entry screen.
  Data Migration Issues: If data has been migrated from another system, duplicates may have been inadvertently created.
  User Error: Users may not be aware that they are entering a duplicate entry, especially if they are working with large datasets or multiple screens.
  Configuration Settings: Certain configurations in the SAP system may enforce uniqueness for specific fields, leading to this error when duplicates are detected.
  
  Solution:
  
  Identify Duplicates: Check the entries in the relevant table or transaction to identify where the duplicates exist. You can use transaction codes like SE16 or SE11 to view the underlying data.
  Remove or Correct Duplicates: Once identified, you can either delete the duplicate entries or correct them to ensure that only unique entries exist.
  Review Data Entry Procedures: Ensure that users are trained on the importance of checking for existing entries before adding new ones.
  Implement Validation Checks: If possible, implement validation checks in the data entry process to alert users when they attempt to enter a duplicate.
  Consult Documentation: Review SAP documentation or consult with your SAP support team for specific guidance related to the module you are working with.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that can help you analyze and manage data (e.g., SE16 for table display, SE11 for data dictionary).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Authorizations: Ensure that users have the appropriate roles and authorizations to prevent unauthorized duplicate entries.
  System Logs: Review system logs for any additional error messages or warnings that may provide more context about the issue.
  
  If the problem persists after following these steps, it may be beneficial to reach out to your SAP support team or consult with an SAP expert for further assistance.