How To Fix 09402 - LID & & not unique

09402 - Overview

• Message type: E = Error

• Message class: 09 -

• Message number: 402

• Message text: LID & & not unique

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 09402 - LID & & not unique ?

  The SAP error message "09402 LID & & not unique" typically indicates that there is a problem with the uniqueness of a key field in a database table or a data entry process. This error often arises in scenarios where the system expects a unique identifier (like a logical ID or LID) but finds multiple entries that match the criteria, leading to ambiguity.
  
  Cause:
  
  Duplicate Entries: The most common cause is that there are duplicate entries in the database for the specified logical ID. This can happen due to incorrect data entry, data migration issues, or system errors.
  
  Configuration Issues: Sometimes, the configuration of the system may not enforce uniqueness properly, leading to multiple records being created with the same identifier.
  Data Integrity Issues: If there are issues with data integrity, such as incomplete transactions or failed updates, it can lead to duplicates.
  
  
  Solution:
  
  Identify Duplicates: Use transaction codes like SE16 or SE11 to check the