How To Fix EL400 - Entry number &1 is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: EL - IS-U meter reading data processing

• Message number: 400

• Message text: Entry number &1 is not unique

What causes this issue?

As a result, you can no longer enter the specified selection criteria.

System Response

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

How to fix this error?

Please contact SAP.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EL400 - Entry number &1 is not unique ?

  The SAP error message EL400 "Entry number &1 is not unique" typically occurs in the context of managing entries in a table or database where a unique identifier is expected. This error indicates that the system has encountered a situation where it expects a unique entry (like a key or identifier) but has found multiple entries that match the criteria.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that there are duplicate entries in the database or table for the specified key or identifier.
  Data Integrity Issues: There may be issues with data integrity, where the system's constraints on unique entries are violated.
  Incorrect Configuration: Sometimes, the configuration of the system or the way data is being entered can lead to duplicates being created unintentionally.
  Custom Development: If there are custom programs or enhancements, they might not be handling unique constraints properly.
  
  Solution:
  
  Identify Duplicates: Use SQL queries or SAP transaction codes (like SE16 or SE11) to check the relevant table for duplicate entries. Look for the entry number specified in the error message.
  Remove or Correct Duplicates: Once duplicates are identified, you can either delete the extra entries or correct them to ensure that each entry is unique.
  Check Data Entry Processes: Review the processes for entering data into the system to ensure that they are not allowing duplicates. This may involve training users or modifying input forms.
  Review Custom Code: If there are custom developments, review the code to ensure that it properly checks for existing entries before creating new ones.
  Database Constraints: Ensure that the database constraints are correctly set up to prevent duplicates from being created in the first place.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE16 (Data Browser) or SE11 (Data Dictionary) to investigate the relevant tables.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation for the specific module you are working with, as the context of the error may vary depending on the application area (e.g., MM, SD, FI).
  Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support for assistance.
  
  By following these steps, you should be able to identify the cause of the EL400 error and implement a solution to resolve it.