How To Fix IUUC_TAB020 - Undefined error when reading classification tables

IUUC_TAB020 - Overview

• Message type: E = Error

• Message class: IUUC_TAB - IUUC: Messages for table analysis

• Message number: 020

• Message text: Undefined error when reading classification tables

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_TAB020 - Undefined error when reading classification tables ?

  The SAP error message IUUC_TAB020, which indicates an "Undefined error when reading classification tables," typically arises in the context of SAP Landscape Transformation (SLT) or when working with SAP Data Services. This error can occur due to various reasons related to the configuration or data integrity in the system.
  Causes:
  
  
  Configuration Issues: There may be misconfigurations in the SLT setup or in the classification tables themselves.
  Data Integrity Problems: The classification tables might have inconsistencies or corrupt data that prevent them from being read correctly.
  Authorization Issues: The user or process attempting to read the classification tables may not have the necessary authorizations.
  Database Issues: There could be underlying database issues, such as locks or corruption, that prevent access to the tables.
  Version Compatibility: There may be compatibility issues between different versions of SAP components.
  
  Solutions:
  
  Check Configuration: Review the SLT configuration settings to ensure that everything is set up correctly. This includes checking the connection settings and