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Message type: E = Error
Message class: AQV - Message texts for SAP Query
Message number: 498
Message text: Structure change in logical database (use Help)
The logical database with which the functional area was created was
changed incompatibly. In particular, tables were removed from the tree.
Since the fields of these tables are not used in queries, they were
removed from the functional area. The structure of the tree was also
changed. Queries on this functional area therefore might not work
correctly.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Check and revise the functional area. Then check and possibly correct
all queries on this functional area.
Error message extract from SAP system. Copyright SAP SE.
AQV498
- Structure change in logical database (use Help) ?The SAP error message AQV498, which states "Structure change in logical database (use Help)," typically occurs when there is a mismatch or inconsistency in the structure of a logical database in SAP. 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 that uses the logical database.
Cause:
- Database Structure Changes: Changes made to the underlying database tables or structures that the logical database relies on.
- Program Modifications: If a program that uses the logical database has been modified without updating the logical database accordingly.
- Transport Issues: If changes were transported from one system to another (e.g., from development to production) and the logical database was not updated or synchronized.
- Version Mismatch: Different versions of the logical database or related programs may lead to inconsistencies.
Solution:
- Check for Updates: Ensure that the logical database is up to date with the latest changes in the underlying data model. You may need to regenerate the logical database.
- Regenerate Logical Database: Use transaction SE11 or SE37 to regenerate the logical database. This can help align the program with the current structure of the database.
- Review Program Code: Check the program code that uses the logical database for any inconsistencies or outdated references.
- Transport Consistency: Ensure that all relevant transports have been applied correctly and that the logical database is consistent across all systems (development, quality assurance, production).
- Consult SAP Help: Use the SAP Help documentation for detailed guidance on the specific logical database and its structure. This can provide insights into what changes may have occurred and how to address them.
Related Information:
If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP team for further investigation.
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