How To Fix CNV_IUUC_REPLICATION107 - Replication for table &1 restarted automatically due to complex change

CNV_IUUC_REPLICATION107 - Overview

• Message type: E = Error

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

• Message number: 107

• Message text: Replication for table &1 restarted automatically due to complex change

If the structure of a source table changes, this can affect the
replication of a table. There are two types of structural changes,
simple changes (adding a non-key field) and complex changes (changing a
data type or length, adding or deleting key fields).
In general, simple changes to a source system table structure do not
interrupt the replication process. The replication of data can continue
without the need for a new initial load.
In the event of a complex table structure change, the status of such a
table changes to <ZK>Failed</>. This means that in order to resume the
replication process for the table, the table must be stopped and
restarted manually (by using the <ZK>Data Provisioning </>pushbutton in
transaction LTRC). However, if you choose the option <ZK>Restart if
Complex Changes Occur</>, whenever the system detects a complex change
to the structure of any table in the configuration, the system will stop
the replication process for the table and restart it automatically.

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.

CNV_IUUC_REPLICATION107 - Details

• The SAP error message CNV_IUUC_REPLICATION107 indicates that the replication process for a specific table has been restarted automatically due to a complex change in the data. This typically occurs in the context of SAP Landscape Transformation (SLT) or SAP Data Services, where data is being replicated from a source system to a target system.
  
  Cause:
  The error is triggered when there are complex changes made to the data in the source table that the replication process cannot handle in a single transaction. Complex changes can include:
  
  Bulk updates or deletes.
  Changes that affect a large number of rows.
  Changes that involve multiple tables or complex relationships.
  Schema changes (like adding or dropping columns) that affect the structure of the table being replicated.
  
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check the Logs: Review the SLT or replication logs to identify the specific changes that triggered the error. This can provide insights into what caused the