How To Fix ST_BUILDER_MESSAGES023 - Nested loop over table "&1" is not allowed

ST_BUILDER_MESSAGES023 - Overview

• Message type: E = Error

• Message class: ST_BUILDER_MESSAGES - Short texts for the ST-Builder

• Message number: 023

• Message text: Nested loop over table "&1" is not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ST_BUILDER_MESSAGES023 - Nested loop over table "&1" is not allowed ?

  The SAP error message ST_BUILDER_MESSAGES023 indicates that there is an attempt to perform a nested loop over a table in an ABAP program, which is not allowed. This typically occurs when you are trying to use nested loops in a way that is not supported by the SAP ABAP runtime environment.
  
  Cause:
  The error is caused by trying to use a nested loop structure (e.g., LOOP AT ... inside another LOOP AT ...) on a table that is not designed to support such operations. This can happen for several reasons, including:
  
  Table Type Restrictions: The table you are trying to loop over may be a standard table or a table type that does not allow nested loops.
  Incorrect Data Structure: The data structure being used may not be appropriate for nested looping.
  Performance Considerations: SAP enforces this restriction to prevent performance issues that can arise from inefficient nested loops.
  
  
  Solution:
  To resolve this error, you can consider