How To Fix CM404 - Access with invalid index (&)

CM404 - Overview

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 404

• Message text: Access with invalid index (&)

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• What is the cause and solution for SAP error message CM404 - Access with invalid index (&) ?

  The SAP error message CM404, which states "Access with invalid index (&)," typically occurs when there is an attempt to access an internal table or a data structure using an index that is either out of bounds or not valid. This can happen in various scenarios, such as when the index is negative, exceeds the number of entries in the table, or is not initialized properly.
  Causes:
  
  Out-of-Bounds Index: The index being used to access an internal table is greater than the number of entries in that table.
  Negative Index: The index is negative, which is not valid for accessing table entries.
  Uninitialized Index: The index variable has not been initialized before being used.
  Table Modification: The internal table may have been modified (entries added or deleted) after the index was set, leading to an invalid index.
  Looping Errors: Errors in loops that manipulate the index can lead to invalid access.
  
  Solutions:
  
  
  Check Index Value: Before accessing the