How To Fix AQ498 - Structure change in logical database (use Help)

AQ498 - Overview

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 498

• Message text: Structure change in logical database (use Help)

What causes this issue?

The logical database used to create the InfoSet has been changed and is
incompatible. Tables have been deleted from the tree. Since the fields
of these tables are not used in queries, they have been deleted from
the InfoSet. The structure of the tree has also been changed.
Therefore, queries using this InfoSet may not work correctly.

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?

Check and modify the InfoSet. Then, you must check and, if necessary,
correct all the queries which use this InfoSet.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AQ498 - Structure change in logical database (use Help) ?

  The SAP error message AQ498, which states "Structure change in logical database (use Help)," typically occurs when there is a mismatch between the structure of the logical database and the program or report that is trying to access it. This can happen due to various reasons, such as changes in the underlying data model, updates to the database structure, or modifications in the program itself.
  
  Cause:
  
  Database Structure Changes: Changes in the underlying database tables or structures that the logical database relies on.
  Program Modifications: If the program or report has been modified without corresponding updates to the logical database.
  Transport Issues: If the logical database was transported to a different system without the necessary adjustments.
  Version Mismatch: Running a program that was developed in a different version of SAP where the logical database structure was different.
  
  
  Solution:
  
  Check for Updates: Ensure that the logical database is up to date with the latest changes in the database