How To Fix AIST013 - Mass change: segment is not unique (&1/&2)

SAP Error Message - Details

• Message type: E = Error

• Message class: AIST - Messages for Asset Master Record

• Message number: 013

• Message text: Mass change: segment is not unique (&1/&2)

What causes this issue?

The segment is <ZH>not</> unique.
As a result of the mass change, there are different segments.
The segment &v1& derived from the profit center is <ZH>not</> the same
as segment &v2&.

System Response

The system does <ZH>not</> perform the change.

How to fix this error?

Adjust the substitution in your mass change so that only one segment is
determined.

Procedure for System Administrators

You can set up this error message as a warning. However, you should make
this a warning message only in exceptional cases and with good reasons,
because otherwise this can lead to inconsistencies in the asset master
record.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AIST013 - Mass change: segment is not unique (&1/&2) ?

  The SAP error message AIST013, which states "Mass change: segment is not unique (&1/&2)," typically occurs during mass changes in the SAP system, particularly when dealing with data segments that are expected to be unique but are not. This error can arise in various contexts, such as when updating master data or during data migration processes.
  Cause:
  The error indicates that the system has encountered a situation where the data segment identified by the parameters (&1 and &2) is not unique. This can happen due to several reasons:
  
  Duplicate Entries: There are duplicate entries in the data that you are trying to change. For example, if you are trying to update a list of customer records, and two records have the same unique identifier (like customer number), the system will throw this error.
  Incorrect Data Structure: The data structure or the way the data is being processed may not conform to the expected uniqueness constraints defined in the system.
  Configuration Issues: There may be issues with the configuration of the data model or the mass change program that is being used.
  
  Solution:
  To resolve the AIST013 error, you can take the following steps:
  
  
  Identify Duplicates: Check the data you are trying to change for duplicates. You can use transaction codes like SE16 or SE11 to view the relevant database tables and identify any duplicate entries.
  
  
  Correct Data: Once you identify the duplicates, you can either remove them or modify them to ensure that each entry is unique. This may involve updating records to have unique identifiers or consolidating duplicate records.
  
  
  Review Mass Change Program: If you are using a custom or standard mass change program, review its logic to ensure it is correctly handling uniqueness. You may need to adjust the selection criteria or the way data is processed.
  
  
  Consult Documentation: Check the SAP documentation or notes related to the specific transaction or program you are using for any known issues or additional guidance.
  
  
  Testing: After making the necessary corrections, test the mass change process again to ensure that the error does not reoccur.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and others that may help in analyzing the data.
  SAP Notes: Search for SAP Notes related to AIST013 for any specific patches or updates that may address this issue.
  Data Model: Understand the data model and relationships in your SAP system to ensure that you are aware of the uniqueness constraints that apply to the data you are working with.
  
  By following these steps, you should be able to identify the cause of the AIST013 error and implement a solution to resolve it.