How To Fix CNV_IUUC_REPLICATION061 - No assignment of a key field structure for table &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 061

• Message text: No assignment of a key field structure for table &1

What causes this issue?

It is tried to define a data transfer (initial load and/or replication)
for table &SYST-MSGV1& . As this is an INDX-like table, it cannot be
directly replicated, but it is necessary to define an assignment of
logical tables to this table. These logical tables have a key structure
which is specific for the possible RELID values of table &SYST-MSGV1& .
The assignment of the appropriate key structures to the RELIDs of table
&SYST-MSGV1& must be maintained in table IUUC_INDX_KEYDEF. However, in
this table, no such assignment was found.

System Response

The requested activity could not be performed for this table.

How to fix this error?

Maintain, in table IUUC_INDX_KEYDEF, the assignment of key structures to
the possible RELID values of table &SYST-MSGV1&

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPLICATION061 - No assignment of a key field structure for table &1 ?

  The SAP error message CNV_IUUC_REPLICATION061 indicates that there is no assignment of a key field structure for a specific table in the context of SAP Landscape Transformation (SLT) replication. This error typically arises during the configuration of SLT when trying to set up data replication from an SAP source system to a target system.
  Cause:
  The error occurs when the SLT system cannot find a proper key field structure for the specified table. This can happen due to several reasons:
  
  Missing Key Fields: The table in question may not have a defined primary key or the key fields are not properly configured in the SLT settings.
  Incorrect Configuration: The SLT configuration might not have been set up correctly, leading to the absence of key field assignments.
  Table Not Supported: The table may not be supported for replication, or it may not be configured for replication in the SLT system.
  Changes in Table Structure: If the structure of the table has changed (e.g., fields added or removed), the SLT configuration may not reflect these changes.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Table Structure:
  
  Verify that the table has a defined primary key. You can do this by checking the table definition in the Data Dictionary (SE11).
  
  
  
  Review SLT Configuration:
  
  Go to the SLT configuration transaction (e.g., LTRC) and check the configuration for the specific table. Ensure that the key fields are correctly assigned.
  If the table is not listed for replication, you may need to add it.
  
  
  
  Adjust Key Field Assignments:
  
  If the key fields are missing or incorrectly assigned, you can adjust the key field assignments in the SLT configuration. This may involve reassigning the key fields or adding new ones.
  
  
  
  Reinitialize Replication:
  
  After making changes, you may need to reinitialize the replication for the affected table. This can be done through the SLT configuration interface.
  
  
  
  Check for Notes and Updates:
  
  Look for any SAP Notes or updates related to SLT and the specific table you are working with. There may be known issues or patches that address this error.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation for SLT to ensure that you are following the correct procedures for setting up replication.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  LTRC (SLT Configuration)
  SE11 (Data Dictionary)
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may provide additional insights or solutions related to this error.
  
  
  SLT Documentation: Refer to the official SAP documentation for Landscape Transformation for detailed guidance on configuration and troubleshooting.
  
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it. If the issue persists, consider reaching out to SAP support for further assistance.