How To Fix CNV_IUUC_REPL_ADV_SE110 - Reading Type 1 is not allowed for Cluster or Pool Table

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_REPL_ADV_SE - MEssage class for package CNV_IUUC_REPL_ADV_SETTINGS

• Message number: 110

• Message text: Reading Type 1 is not allowed for Cluster or Pool Table

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPL_ADV_SE110 - Reading Type 1 is not allowed for Cluster or Pool Table ?

  The SAP error message CNV_IUUC_REPL_ADV_SE110 indicates that there is an issue with reading data from a cluster or pool table using a Type 1 reading method. This error typically arises in the context of data migration or replication processes, particularly when using the SAP Landscape Transformation (SLT) Replication Server or similar tools.
  Cause:
  
  
  Cluster or Pool Tables: In SAP, cluster and pool tables are special types of database tables that store data in a compressed format. They are not designed for direct access like standard tables. The error occurs because the system is trying to read data from these tables using a method that is not supported for such table types.
  
  
  Type 1 Reading Method: This method is typically used for standard tables. When the system attempts to apply this method to cluster or pool tables, it results in the error since these tables require different handling.
  
  
  Solution:
  
  
  Change the Reading Method: If you are using a data migration or replication tool, check the configuration settings to ensure that the reading method is appropriate for the type of tables you are working with. You may need to switch to a different reading method that supports cluster or pool tables.
  
  
  Use Views: Instead of directly accessing cluster or pool tables, consider creating database views that expose the necessary data in a format that can be read using standard methods. This way, you can avoid the limitations imposed by the table types.
  
  
  Review Data Model: If possible, review the data model and consider whether the use of cluster or pool tables is necessary. If not, you might want to convert them to standard tables, which can simplify data access.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific tools you are using (e.g., SLT, SAP Data Services) to understand the supported configurations and best practices for handling cluster and pool tables.
  
  
  SAP Notes and Support: Check for any relevant SAP Notes that might address this specific error or provide additional guidance. If the issue persists, consider reaching out to SAP support for assistance.
  
  
  Related Information:
  
  Cluster Tables: These are tables that store data from multiple tables in a single table structure, primarily for performance reasons.
  Pool Tables: These are similar to cluster tables but are used to store data from multiple logical tables in a single physical table.
  Data Migration: When migrating data, it is crucial to understand the underlying database structure and the implications of using different table types.
  SAP SLT: The SAP Landscape Transformation Replication Server is a tool used for real-time data replication and transformation.
  
  By addressing the reading method and understanding the nature of the tables involved, you can resolve the CNV_IUUC_REPL_ADV_SE110 error effectively.