How To Fix DMC_RT_MSG189 - Missing key relationship in &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 189

• Message text: Missing key relationship in &1

What causes this issue?

The key values on the &V1& tab differ from the key values on the &V2&
tab.

System Response

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

How to fix this error?

Make sure that the key relationship is consistent on both tabs.
Check whether the key columns contain a typing error or whether the
corresponding key is missing.

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 DMC_RT_MSG189 - Missing key relationship in &1 ?

  The SAP error message DMC_RT_MSG189, which states "Missing key relationship in &1," typically occurs in the context of Data Migration Cockpit (DMC) or during data migration processes. This error indicates that there is a missing key relationship between the data entities being processed, which is essential for maintaining data integrity and ensuring that the relationships between different data records are correctly established.
  
  Cause:
  
  
  Missing Foreign Key Relationships: The error often arises when there are foreign key relationships that are not defined or are missing in the data being migrated. This can happen if the source data does not have the necessary keys to establish relationships with other data entities.
  
  
  Incorrect Data Mapping: If the mapping of fields between the source and target systems is incorrect or incomplete, it can lead to missing relationships.
  
  
  Data Integrity Issues: If the data in the source system has integrity issues, such as orphaned records or missing references, this