How To Fix >A172 - Formal error: duplicate entry in internal table (&1)

>A172 - Overview

• Message type: E = Error

• Message class: >A -

• Message number: 172

• Message text: Formal error: duplicate entry in internal 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message >A172 - Formal error: duplicate entry in internal table (&1) ?

  The SAP error message A172: Formal error: duplicate entry in internal table (&1) typically indicates that there is an attempt to insert a duplicate entry into an internal table that is expected to contain unique entries. This error often arises during the execution of ABAP programs or during data processing tasks.
  
  Cause:
  
  Duplicate Data: The most common cause is that the data being processed contains duplicates that violate the uniqueness constraint of the internal table.
  Logic Error: There may be a logical error in the ABAP code that leads to the same entry being added multiple times.
  Incorrect Data Handling: The program may not be correctly checking for existing entries before attempting to add new ones.
  
  
  Solution:
  
  
  Check Data Source: Review the data source to ensure that it does not contain duplicates. If duplicates are present, you may need to clean the data before processing.
  
  
  Modify ABAP Code:
  
  
  Ensure that the code checks for existing entries in the