How To Fix LTR2_BASIS_CHECK120 - Sequence number &1 is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR2_BASIS_CHECK - LTR2 Messages of Checks in Check Framework

• Message number: 120

• Message text: Sequence number &1 is not unique

What causes this issue?

The SEQNO &V1& of the assigned object (document or function) is not
unique.

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?

Remove the assignement, and assign it once again.

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 LTR2_BASIS_CHECK120 - Sequence number &1 is not unique ?

  The SAP error message LTR2_BASIS_CHECK120 with the description "Sequence number &1 is not unique" typically occurs in the context of SAP's Logistics Execution (LE) or Warehouse Management (WM) modules. This error indicates that there is a conflict with sequence numbers in the system, which are expected to be unique but have duplicates.
  Cause:
  
  
  Duplicate Sequence Numbers: The primary cause of this error is that the sequence number specified in the transaction is not unique. This can happen if:
  
  There are multiple entries in the database with the same sequence number.
  Data was incorrectly imported or migrated, leading to duplicates.
  Manual entries or adjustments were made that resulted in non-unique sequence numbers.
  
  
  
  Configuration Issues: Sometimes, the configuration settings for number ranges or sequence generation may not be set up correctly, leading to overlaps.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify Duplicates:
  
  Use transaction codes like SE16 or SE11 to check the relevant database tables (e.g., LTR2, LTR2A) for duplicate entries with the same sequence number.
  Run a query to find all entries with the specified sequence number to confirm duplicates.
  
  
  
  Correct Data:
  
  If duplicates are found, you will need to determine which entries are valid and which can be deleted or modified.
  Ensure that the sequence numbers are unique by either deleting or adjusting the conflicting entries.
  
  
  
  Check Configuration:
  
  Review the configuration settings for number ranges in the relevant modules (e.g., LE, WM) to ensure they are set up correctly.
  If necessary, adjust the number range settings to prevent future conflicts.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to this error message for any specific recommendations or patches that may address the issue.
  
  
  
  Testing:
  
  After making changes, test the process that triggered the error to ensure that it no longer occurs.
  
  
  
  Contact SAP Support:
  
  If the issue persists or if you are unsure about making changes, consider reaching out to SAP support for assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and others that may help in troubleshooting.
  SAP Notes: Check the SAP Support Portal for any notes related to this error message, as there may be specific fixes or recommendations provided by SAP.
  Documentation: Review the SAP Help Portal for detailed information on number ranges and sequence management in the Logistics Execution and Warehouse Management modules.
  
  By following these steps, you should be able to identify and resolve the issue causing the LTR2_BASIS_CHECK120 error in your SAP system.