How To Fix IUUC_MAIN124 - Error occured during field to field comparison of Table &1

IUUC_MAIN124 - Overview

• Message type: E = Error

• Message class: IUUC_MAIN - IUUC: Main Message class

• Message number: 124

• Message text: Error occured during field to field comparison of Table &1

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_MAIN124 - Error occured during field to field comparison of Table &1 ?

  The SAP error message IUUC_MAIN124 indicates that there was an issue during the field-to-field comparison of a specific table (denoted as &1) in the context of the SAP Landscape Transformation (SLT) replication process. This error typically arises during the data replication process when the system is trying to compare fields between the source and target tables.
  
  Cause:
  
  Data Type Mismatch: The fields in the source and target tables may have different data types or lengths, leading to comparison issues.
  Null Values: The presence of null values in one of the fields being compared can cause the comparison to fail.
  Inconsistent Data: If the data in the source and target tables is inconsistent or corrupted, it can lead to errors during comparison.
  
  Configuration Issues: Incorrect configuration settings in the SLT setup can also lead to this error.
  Table Structure Changes: If there have been changes to the structure of the source or target tables (like adding or