How To Fix AD211 - Structure type 'HEAD' can be used only once

AD211 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 211

• Message text: Structure type 'HEAD' can be used only once

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AD211 - Structure type 'HEAD' can be used only once ?

  The SAP error message AD211, which states "Structure type 'HEAD' can be used only once," typically occurs in the context of ABAP programming, particularly when dealing with data structures and internal tables. This error indicates that the structure type 'HEAD' is being used multiple times in a way that is not allowed.
  
  Cause:
  
  Duplicate Declaration: The structure type 'HEAD' has been declared more than once in the same context, such as in a program or a function module.
  Incorrect Use in Internal Tables: If you are trying to define an internal table or a work area using the same structure type multiple times, it can lead to this error.
  Scope Issues: The structure might be defined in a way that it is not allowed to be reused in the same scope.
  
  
  Solution:
  
  Check Declarations: Review your code to ensure that the structure 'HEAD' is declared only once. If you need to use it multiple times, consider