How To Fix UMGLOG421 - No entries found in table DDXTT_CONV_UC.

SAP Error Message - Details

• Message type: E = Error

• Message class: UMGLOG - Message class for the SPUMG Main Log

• Message number: 421

• Message text: No entries found in table DDXTT_CONV_UC.

What causes this issue?

The check "Inactive Nametabs UC" looks for table entries in table
DDXTT_CONV_UC. The table is the so called "inactive alternate nametab".
In general this table is empty. A non empty table DDXTT_CONV_UC
indicates that nametabs have been generated not correctly. This can have
an impact on the consistency of the system after the Unicode conversion
because of the nametab switch during Unicode conversion.
Please read note 932779 for more information on the handling of nametabs
in the Unicode conversion.

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?

No action is necessary. Table DDXTT_CONV_UC is empty.

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 UMGLOG421 - No entries found in table DDXTT_CONV_UC. ?

  The SAP error message UMGLOG421, which states "No entries found in table DDXTT_CONV_UC," typically occurs in the context of data conversion or migration processes, particularly when using the SAP Data Migration tools or during the execution of certain data transfer programs.
  Cause:
  The error indicates that the system is attempting to access the table DDXTT_CONV_UC, which is used for storing conversion rules or mappings, but it finds no entries. This can happen due to several reasons:
  
  Missing Configuration: The conversion rules or mappings have not been defined or configured in the system.
  Incorrect Data Transfer Setup: The data transfer or migration process may not have been set up correctly, leading to the absence of necessary entries in the conversion table.
  Data Migration Tool Issues: If you are using a specific data migration tool or program, it may not have been executed properly, or there may be a version mismatch.
  Transport Issues: If the conversion rules were supposed to be transported from another system, the transport may not have been successful.
  
  Solution:
  To resolve the UMGLOG421 error, you can take the following steps:
  
  
  Check Configuration:
  
  Verify that the conversion rules for the data you are trying to process are correctly defined in the system. You can do this by checking the relevant configuration settings in the SAP system.
  
  
  
  Create Entries:
  
  If no entries exist in the DDXTT_CONV_UC table, you may need to create them manually or through a configuration transaction. This typically involves defining the necessary conversion rules for the data types you are working with.
  
  
  
  Review Data Migration Process:
  
  Ensure that the data migration process is set up correctly. Review the steps you have taken and confirm that all necessary pre-requisites have been met.
  
  
  
  Check for Transport Issues:
  
  If the conversion rules were supposed to be transported from another system, check the transport logs to ensure that the transport was successful and that the necessary objects were included.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific data migration tool or process you are using. There may be specific instructions or known issues that can help you resolve the error.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue on your own, consider reaching out to SAP support for assistance. They can provide guidance based on the specific context of your implementation.
  
  
  
  Related Information:
  
  Table DDXTT_CONV_UC: This table is part of the data conversion framework in SAP and is used to store user-defined conversion rules.
  Data Migration Tools: Familiarize yourself with the specific data migration tools you are using, such as SAP S/4HANA Migration Cockpit, SAP Data Services, or LSMW (Legacy System Migration Workbench).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.