How To Fix CNV_IUUC_DB_CONN122 - Parallel replication not possible for table &1; field &2 is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_DB_CONN - db connection

• Message number: 122

• Message text: Parallel replication not possible for table &1; field &2 is not allowed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_DB_CONN122 - Parallel replication not possible for table &1; field &2 is not allowed ?

  The SAP error message CNV_IUUC_DB_CONN122 indicates that parallel replication is not possible for a specific table and field due to certain restrictions. This error typically arises in the context of SAP Landscape Transformation (SLT) or when using SAP Data Services for data replication.
  Cause:
  The error occurs when the system attempts to replicate data in parallel for a table that has a field that is not allowed for parallel processing. This can happen for several reasons, including:
  
  Field Characteristics: The field in question may have characteristics that prevent it from being processed in parallel, such as being a primary key or having specific data types that are not supported for parallel replication.
  Table Configuration: The configuration of the table in the SLT or replication settings may not allow for parallel processing due to dependencies or constraints.
  Database Limitations: Some databases have limitations on how certain types of data can be replicated, especially in parallel.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Field Properties: Review the properties of the field mentioned in the error message. Ensure that it is suitable for parallel processing. If it is a primary key or has other constraints, consider whether it can be modified or if the replication strategy needs to be adjusted.
  
  
  Modify Replication Settings: If possible, adjust the replication settings for the table in question. This may involve changing the configuration in the SLT or Data Services to allow for serial processing instead of parallel processing.
  
  
  Consult Documentation: Refer to the SAP documentation for SLT or the specific replication tool you are using. There may be guidelines or best practices regarding which fields and tables can be replicated in parallel.
  
  
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. They may provide insights specific to your system configuration and the error encountered.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on parallel replication limitations.
  SLT Configuration: Familiarize yourself with the SLT configuration settings, especially those related to parallel processing and table mappings.
  Performance Considerations: Understand the performance implications of switching from parallel to serial processing, as this may affect the overall data replication speed.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.