How To Fix CNV_IUUC_REPLICATION178 - Table &1 is redirected to compatibility view &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_REPLICATION - IUUC replication messages (HANA)

• Message number: 178

• Message text: Table &1 is redirected to compatibility view &2

What causes this issue?

If a compatibility view is in place for a table, requests to access that
table are redirected by the system to the compatibility view. Instead of
reading directly from the table, the system reads data from the
compatibility view. Whenever an application uses this table, data is not
written to the table or to the compatibility view, but to the newly
introduced tables which are part of the compatibility view.

System Response

The system displays the view in a tree-like structure. In this way, you
can easily see all tables and views that are used by the compatibility
view.

How to fix this error?

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

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 CNV_IUUC_REPLICATION178 - Table &1 is redirected to compatibility view &2 ?

  The SAP error message CNV_IUUC_REPLICATION178 indicates that a table is being redirected to a compatibility view. This typically occurs in the context of SAP's data replication processes, particularly when using the SAP Landscape Transformation (SLT) replication server or during data migration scenarios.
  Cause:
  
  Table Redirection: The error suggests that the table you are trying to access or replicate has been redirected to a compatibility view. This can happen if the original table has been deprecated or replaced by a new structure in the database.
  Data Model Changes: Changes in the underlying data model, such as the introduction of new database tables or changes in the schema, can lead to this situation.
  Configuration Issues: There may be configuration issues in the SLT setup or the data replication settings that are causing the system to redirect to a compatibility view.
  
  Solution:
  
  Check Compatibility View: Investigate the compatibility view (&2) to understand its structure and how it relates to the original table (&1). You may need to adjust your queries or replication settings to work with the compatibility view.
  Update Replication Settings: If you are using SLT, ensure that your replication settings are correctly configured to handle the new data model. This may involve updating the configuration to point to the new tables or views.
  Consult Documentation: Review SAP documentation or release notes for any changes related to the tables in question. This can provide insights into why the redirection is occurring and how to handle it.
  Adjust Data Migration Strategy: If this error occurs during a data migration process, consider revising your migration strategy to accommodate the new data structures.
  Contact SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support for assistance. They can provide guidance based on the specific context of your system and the error.
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may address this specific error or provide guidance on handling compatibility views.
  SLT Documentation: Review the SLT documentation for best practices on setting up and managing data replication, especially in the context of changes to the underlying data model.
  Data Dictionary: Use transaction codes like SE11 or SE12 to explore the data dictionary and understand the relationships between the original table and the compatibility view.
  
  By following these steps, you should be able to address the CNV_IUUC_REPLICATION178 error and ensure that your data replication processes function smoothly.