How To Fix SY157 - INSERT/MODIFY/DELETE without INDEX outside of a LOOP

SY157 - Overview

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 157

• Message text: INSERT/MODIFY/DELETE without INDEX outside of a LOOP

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SY157 - INSERT/MODIFY/DELETE without INDEX outside of a LOOP ?

  The SAP error message SY157 indicates that there is an attempt to perform an INSERT, MODIFY, or DELETE operation on an internal table outside of a LOOP construct. This is a common error in ABAP programming when you try to manipulate an internal table without properly iterating through it.
  
  Cause:
  The error occurs when you try to execute a database operation (like INSERT, MODIFY, or DELETE) on an internal table without being inside a LOOP statement that iterates over that table. In ABAP, these operations are typically performed within a LOOP to ensure that you are working with the correct context of the internal table.
  Example of the Error:
  DATA: lt_table TYPE TABLE OF your_structure,
        ls_row   TYPE your_structure.
  
  " Incorrect usage leading to SY157
  INSERT ls_row INTO lt_table.
  
  Solution:
  To resolve this error, you need to ensure that any INSERT, MODIFY, or DELETE operations on an internal table are performed within