How To Fix CNV_IUUC_DB_CONN120 - Parallel replication not possible for table &1; no key fields specified

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_DB_CONN - db connection

• Message number: 120

• Message text: Parallel replication not possible for table &1; no key fields specified

What causes this issue?

In order to replicate a table in parallel, the system groups similar
rows together. The system uses key fields to group these rows together.

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

System Response

The system cannot parallelize table &V1& (from mass transfer ID &V2&)
because the system does not have a key field which is required to group
the rows together.

How to fix this error?

Specify at least one key field from table &V1& in the control table
IUUC_REPL_PARALL.

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_DB_CONN120 - Parallel replication not possible for table &1; no key fields specified ?

  The SAP error message CNV_IUUC_DB_CONN120 indicates that parallel replication is not possible for a specific table because no key fields have been specified. This error typically arises in the context of SAP Landscape Transformation (SLT) or SAP Data Services when trying to replicate data from one system to another.
  Cause:
  
  Missing Key Fields: The primary cause of this error is that the table in question does not have any key fields defined. Key fields are essential for identifying unique records in a table, and without them, the system cannot perform parallel replication.
  Configuration Issues: There may be issues in the configuration of the replication setup, such as incorrect table settings or missing parameters.
  Table Structure: The structure of the table may not be suitable for parallel processing, which requires a clear definition of key fields.
  
  Solution:
  
  
  Define Key Fields:
  
  Go to the Data Replication Configuration (DRC) in the SLT system.
  Locate the table that is causing the error.
  Ensure that key fields are defined for the table. You can do this by selecting the table and specifying the key fields in the configuration settings.
  
  
  
  Check Table Settings:
  
  Review the settings for the table in the SLT configuration to ensure that all necessary parameters are correctly set.
  Make sure that the table is marked for replication and that the key fields are correctly identified.
  
  
  
  Reconfigure Replication:
  
  If the key fields were added or modified, you may need to reconfigure the replication for the table. This can involve stopping and restarting the replication process for that specific table.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for SLT or the specific data replication tool you are using to ensure that you are following the correct procedures for defining key fields and configuring replication.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest patches and updates, as there may be bug fixes or improvements related to replication processes.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to SLT and data replication for any known issues or additional guidance.
  SLT Documentation: Review the official SAP documentation for Landscape Transformation to understand the requirements for key fields and parallel replication.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By addressing the key field configuration and ensuring that the table is set up correctly for replication, you should be able to resolve the CNV_IUUC_DB_CONN120 error.