How To Fix CNV_IUUC_REPLICATION421 - Cannot display table information; table name exceeds 30 characters

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 421

• Message text: Cannot display table information; table name exceeds 30 characters

What causes this issue?

You can view information for specific tables that are not yet in the
initial load stage or the replication stage, but not if the table name
exceeds 30 characters. The table you have specified exceeds 30
characters.

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?

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_REPLICATION421 - Cannot display table information; table name exceeds 30 characters ?

  The SAP error message CNV_IUUC_REPLICATION421 indicates that there is an issue with displaying table information because the table name exceeds the maximum length of 30 characters. This is a common limitation in SAP systems, particularly in older versions or specific contexts where table names are restricted to a certain length.
  Cause:
  
  Table Name Length: In SAP, the maximum length for table names is typically 30 characters. If a table name exceeds this limit, the system cannot process it correctly, leading to the error message.
  Replication Issues: This error often occurs in the context of data replication processes, such as those involving SAP Landscape Transformation (SLT) or other data migration tools, where long table names may be generated or used.
  
  Solution:
  
  Rename the Table: If possible, consider renaming the table to a shorter name that complies with the 30-character limit. This may involve modifying the database schema and ensuring that all references to the table are updated accordingly.
  Use Aliases: If renaming is not feasible, you might consider using database views or aliases that can provide a shorter reference to the table while keeping the original name intact.
  Check Configuration: Review the configuration settings of the replication or migration tool you are using. Ensure that it is not generating excessively long table names due to misconfiguration.
  Consult Documentation: Refer to the SAP documentation or notes related to the specific tool or process you are using. There may be specific guidelines or best practices for handling long table names.
  Contact SAP Support: If the issue persists and you cannot find a suitable solution, consider reaching out to SAP support for assistance. They may provide patches or updates that address this limitation.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on handling long table names.
  SLT Documentation: If you are using SAP Landscape Transformation, review the official documentation for any limitations or recommendations regarding table naming conventions.
  Database Constraints: Be aware of any database-specific constraints that may also affect table naming and replication processes.
  
  By addressing the table name length issue and following the suggested solutions, you should be able to resolve the error CNV_IUUC_REPLICATION421.