How To Fix AP099 - Sequence number &1 assigned more than once

AP099 - Overview

• Message type: E = Error

• Message class: AP - Investment program messages

• Message number: 099

• Message text: Sequence number &1 assigned more than once

What causes this issue?

The column numbers specify the sequence of the output of value field
columns within the list. However, you have entered such a number
twice or several times, so that the output sequence is no longer
clear.

System Response

The list cannot be created.

How to fix this error?

Enter each column number only once.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AP099 - Sequence number &1 assigned more than once ?

  The SAP error message AP099, which states "Sequence number &1 assigned more than once," typically occurs in the context of asset accounting. This error indicates that a sequence number (which is often used for asset transactions) has been assigned to more than one asset or transaction, leading to a conflict.
  
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the same sequence number has been inadvertently assigned to multiple asset transactions or assets.
  Data Migration Issues: If data has been migrated from another system or if there have been manual entries that were not properly validated, it can lead to duplicate sequence numbers.
  
  Configuration Issues: Incorrect configuration in the asset accounting settings can also lead to this error, especially if the number ranges are not set up correctly.
  
  
  Solution:
  
  Identify Duplicates: Use transaction codes like SE16 or SE11 to check the relevant tables (e.g., ANLA for asset master data) for duplicate sequence numbers.