How To Fix CNV_IUUC_REPLICATION057 - Trigger missing for table &1 (mass transfer ID &2); replication suspended

CNV_IUUC_REPLICATION057 - Overview

• Message type: E = Error

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

• Message number: 057

• Message text: Trigger missing for table &1 (mass transfer ID &2); replication suspended

What causes this issue?

When SAP Landscape Transformation Replication Server replicates a table
to the target system, it creates a database trigger in the source system
that records any changes in a logging table. For the table listed above,
this trigger is missing.
This can happen for one of the following reasons:
The trigger was deleted manually using database administration tools.
The trigger was deleted manually using one of the expert functions
provided by SAP Landscape Transformation Replication Server.
The structure of the table was changed, for example during an upgrade.
Note that you can use expert function View Trigger Source Code in the
SAP LT Replication Server Cockpit (transaction LTRC) to determine
whether the trigger is really missing.

System Response

Since the database trigger is needed to record any changes to the source
system table, some changes to the source table might have been lost (and
not replicated to the target system). The system suspends the
replication of the table, sets the status of the table status to Failed,
and the sets the status of the trigger Inconsistent.

How to fix this error?

We recommend that you stop the replication of the table, and restart the
replication process. This ensures that the source and target tables are
synchronized.
If you are absolutely sure that the source table was not changed since
the trigger was identified as missing, you can reset the status of the
trigger. You can do this in the SAP LT Replication Server Cockpit
(transaction LTRC) by using the expert function Reset Status for Trigger
and Logging Tables. You can then recreate the trigger manually by using
the processing step Create Database Triggers.

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.

CNV_IUUC_REPLICATION057 - Details

• The SAP error message CNV_IUUC_REPLICATION057 indicates that there is a missing trigger for a specific table during the data replication process, which is part of the SAP Landscape Transformation (SLT) replication setup. This error typically occurs when the system is trying to replicate data from a source system to a target system, and it cannot find the necessary database trigger that is required for capturing changes in the source table.
  
  Cause:
  
  Missing Trigger: The most common cause of this error is that the database trigger for the specified table (indicated by &1) is either not created or has been dropped.
  Replication Setup Issues: There may have been issues during the initial setup of the SLT replication, leading to incomplete configurations.
  Database Changes: Changes in the database schema, such as dropping or altering tables, can lead to the loss of triggers.
  Mass Transfer ID Issues: The mass transfer ID (&2) may not be correctly configured or