How To Fix E9879 - Internal error: Insertion error for internal table &1 in &2 &3

E9879 - Overview

• Message type: E = Error

• Message class: E9 - General IS-U Error Messages

• Message number: 879

• Message text: Internal error: Insertion error for internal table &1 in &2 &3

What causes this issue?

An error has occurred during insertion into an internal table.
A program error probably exists. A data inconsistency may also exist.

System Response

The system cannot perform your request due to a program error.

How to fix this error?

Note the following:
The message text and message number
The name of the internal table and the name of the module/form
The transaction/report
The entries, which caused this error.
Send a problem message to SAP with these specifications.

Error message extract from SAP system. Copyright SAP SE.

E9879 - Details

• The SAP error message E9879, which states "Internal error: Insertion error for internal table &1 in &2 &3," typically indicates that there is an issue with inserting data into an internal table during the execution of an ABAP program. This error can arise from various causes, and understanding the context is crucial for troubleshooting.
  Possible Causes:
  
  Memory Issues: The internal table may be too large, leading to memory allocation problems.
  Data Type Mismatch: The data being inserted may not match the expected structure of the internal table.
  Table Locking: If the internal table is being accessed concurrently, it may lead to locking issues.
  Corrupted Data: The data being processed may be corrupted or not in the expected format.
  Program Logic Errors: There may be logical errors in the ABAP code that lead to incorrect handling of the internal table.
  
  Solutions:
  
  Check Data Types: Ensure that the data being inserted into the internal table matches the defined structure of