How To Fix CNV_IUUC_REPLICATION387 - Failed to update: MT_ID &1 Field Name &2; see long text

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 387

• Message text: Failed to update: MT_ID &1 Field Name &2; see long text

Procedure
Check the Table Fields section on Advanced Replication Settings -> Table
Settings-> Mapping Values. Make sure you use the correct statements for
this field. For example, the Target DB Type field must not contain any
field names

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

For how to specify a target system database data type for a specific
field, see the Table Fields section in
<DS:TX.IUUC_REPL_HELP_MAPPING_VALUE>Mapping Values</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPLICATION387 - Failed to update: MT_ID &1 Field Name &2; see long text ?

  The SAP error message CNV_IUUC_REPLICATION387 typically occurs in the context of data replication processes, particularly when using SAP Landscape Transformation (SLT) for real-time data replication. This error indicates that there was a failure to update a specific field in a table during the replication process.
  Cause:
  The error can be caused by several factors, including:
  
  Data Type Mismatch: The data type of the source field does not match the target field in the SAP system.
  Null Values: Attempting to insert or update a record with a null value in a field that does not allow nulls.
  Constraints Violation: There may be constraints (like primary key or foreign key constraints) that are being violated during the update.
  Replication Configuration Issues: There may be issues with the configuration of the SLT replication settings.
  Database Locking: The target table may be locked by another process, preventing the update from occurring.
  Data Consistency Issues: The data being replicated may not be consistent with the target schema.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  Check the Long Text: The error message usually has a long text that provides more details about the specific issue. Review this text for additional context.
  Review Data Types: Ensure that the data types of the source and target fields match. If they do not, you may need to adjust the data types or transform the data before replication.
  Check for Null Values: Verify that the data being replicated does not contain null values for fields that are defined as NOT NULL in the target table.
  Examine Constraints: Check the target table for any constraints that may be violated by the incoming data. Adjust the data or constraints as necessary.
  Review SLT Configuration: Ensure that the SLT configuration is set up correctly, including the mapping of fields and any transformation rules.
  Database Locks: Check if the target table is locked by another transaction. If so, you may need to wait for the lock to be released or investigate the locking process.
  Data Consistency: Ensure that the data being replicated is consistent with the target schema. This may involve cleaning or transforming the data before replication.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SLT or LTMOM to manage and monitor the SLT replication process.
  Logs: Check the SLT logs for more detailed error messages that can provide insight into what went wrong during the replication process.
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide guidance on troubleshooting replication issues.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance, providing them with the error details and any relevant logs.