How To Fix CNVMBTCHECK058 - &1| Sender field &2 will not be checked for existence. (cluster/pool)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBTCHECK - Messages for PCL Checks

• Message number: 058

• Message text: &1| Sender field &2 will not be checked for existence. (cluster/pool)

This migration object has a cluster or pooled table mentioned in its
table strucuture. Therefore the data dictionary checks will not be done
for this migration object.
For further assistance please refer to SAP support.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNVMBTCHECK058 - &1| Sender field &2 will not be checked for existence. (cluster/pool) ?

  The SAP error message CNVMBTCHECK058 indicates that a specific sender field in a data migration or conversion process is not being checked for existence due to it being part of a cluster or pool table. This typically occurs in the context of data migration projects, especially when using the SAP Migration Cockpit or similar tools.
  Cause:
  
  
  Cluster/Pooled Tables: The error arises because the field in question belongs to a cluster or pooled table. In SAP, cluster and pooled tables are special types of tables that store data in a compressed format and are not directly accessible like standard tables. As a result, the system cannot perform existence checks on fields from these tables in the same way it does for standard tables.
  
  
  Data Migration Settings: The configuration or settings in the data migration tool may not be set up to handle cluster or pooled tables correctly, leading to this error.
  
  
  Solution:
  
  
  Review Data Mapping: Check the data mapping configuration in your migration project. Ensure that the fields from cluster or pooled tables are correctly mapped and that you are using the appropriate methods to handle them.
  
  
  Use Alternative Methods: If you need to check for the existence of data in cluster or pooled tables, consider using ABAP programs or custom reports that can read these tables directly and perform the necessary checks.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be guidelines or best practices for handling cluster and pooled tables.
  
  
  Adjust Migration Strategy: If the sender field is critical for your migration, you may need to adjust your migration strategy to accommodate the limitations of cluster and pooled tables.
  
  
  Seek SAP Support: If the issue persists, consider reaching out to SAP support for assistance. They may provide insights or patches that can help resolve the issue.
  
  
  Related Information:
  
  
  Cluster Tables: These are tables that store data from multiple logical tables in a single physical table. They are used to optimize storage and performance.
  
  
  Pooled Tables: Similar to cluster tables, pooled tables combine multiple logical tables into a single physical table but are used for different purposes, often for smaller tables.
  
  
  Data Migration Cockpit: This is a tool provided by SAP to facilitate data migration from legacy systems to SAP systems. It includes various features for mapping, transforming, and validating data.
  
  
  ABAP Development: If you are familiar with ABAP, you can create custom programs to handle specific data checks and transformations that are not supported by standard migration tools.
  
  
  By understanding the nature of the error and the context in which it occurs, you can take appropriate steps to resolve it and ensure a successful data migration process.