How To Fix SWF_EXP_001253 - Table '&1' of type 'HASHED' does not allow index access

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 253

• Message text: Table '&1' of type 'HASHED' does not allow index access

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_EXP_001253 - Table '&1' of type 'HASHED' does not allow index access ?

  The SAP error message SWF_EXP_001253 indicates that there is an attempt to access a hashed table using an index, which is not allowed in ABAP. Hashed tables are designed for fast access using a unique key, and they do not support index-based access like standard or sorted tables.
  Cause:
  The error occurs when:
  
  You are trying to access a hashed table using an index (e.g., using an index number like table[index]).
  The table is defined as a hashed table in the ABAP Dictionary, which restricts access to key-based retrieval only.
  
  Solution:
  To resolve this error, you should access the hashed table using the key instead of an index. Here’s how you can do that:
  
  
  Use Key Access: Instead of trying to access the table using an index, use the key fields defined in the hashed table. For example:
  DATA: lt_hashed_table TYPE HASHED TABLE OF your_structure WITH UNIQUE KEY your_key_field.
  
  READ TABLE lt_hashed_table WITH KEY your_key_field = your_value INTO your_result.
  IF sy-subrc = 0.
      " Process your_result
  ELSE.
      " Handle the case where the key is not found
  ENDIF.
  
  
  Check Table Definition: Ensure that the table is indeed defined as a hashed table in the ABAP Dictionary. If you need to access it by index frequently, consider changing the table type to a standard or sorted table, but be aware of the performance implications.
  
  
  Review Code Logic: If you are unsure about the access method, review the logic of your code to ensure that you are using the correct access method for the type of table you are working with.
  
  
  Related Information:
  
  
  Table Types in ABAP:
  
  Standard Table: Accessed by index, allows duplicates.
  Sorted Table: Accessed by index, maintains sorted order, allows duplicates.
  Hashed Table: Accessed by unique key, does not allow duplicates, optimized for fast access.
  
  
  
  Performance Considerations: Hashed tables are optimized for scenarios where you need to retrieve data quickly based on a unique key. If your use case involves frequent index-based access, consider the implications of changing the table type.
  
  
  Documentation: Refer to the SAP Help Portal or ABAP documentation for more details on table types and their usage.
  
  
  By following these guidelines, you should be able to resolve the error and access your hashed table correctly.