How To Fix W7027 - System error: error deleting in an internal table

SAP Error Message - Details

• Message type: E = Error

• Message class: W7 - Message Class for Value-Only Based Inventory Management

• Message number: 027

• Message text: System error: error deleting in an internal table

What causes this issue?

An error occurred during deletion in a program-internal table.

How to fix this error?

INCLUDE ISR_SYSTEMFEHLER

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W7027 - System error: error deleting in an internal table ?

  Certainly! Here's a detailed explanation regarding the SAP error message W7027: System error: error deleting in an internal table:
  
  Error Message:
  W7027 - System error: error deleting in an internal table
  
  Cause:
  This warning message occurs when there is an attempt to delete an entry from an internal table in ABAP, but the deletion operation fails due to an internal inconsistency or system error. The typical reasons include:
  
  Invalid or incorrect table key or index: The deletion statement tries to delete a row that does not exist or the key/index used is invalid.
  Corrupted internal table: The internal table might be in an inconsistent state due to previous operations.
  Incorrect use of DELETE statement: For example, deleting from a sorted or hashed table using an incorrect key or without specifying the correct key fields.
  Concurrent modification issues: If the internal table is being modified in parallel (e.g., in a loop or by multiple processes), it might cause inconsistencies.
  System memory or runtime errors: Rarely, system-level issues or memory corruption can cause this error.
  
  
  Typical Scenario:
  DELETE itab WHERE key_field = some_value.
  If some_value does not exist in itab or the key is not properly defined, the system might raise this warning.
  
  Solution:
  
  
  Check the DELETE statement:
  
  Ensure that the key or condition used in the DELETE statement is correct and matches the table type.
  For hashed or sorted tables, make sure the key fields are specified correctly.
  For standard tables, deleting by index or condition should be valid.
  
  
  
  Verify the internal table contents:
  
  Debug or log the contents of the internal table before the DELETE operation.
  Confirm that the entry you want to delete actually exists.
  
  
  
  Use appropriate DELETE syntax:
  
  For hashed tables, use the exact key.
  For sorted tables, use the key fields.
  For standard tables, you can delete by index or condition.
  
  
  
  Check for concurrent modifications:
  
  Avoid modifying the internal table while looping over it.
  Use safe looping constructs or collect entries to delete and delete them after the loop.
  
  
  
  Debugging:
  
  Use the ABAP debugger to step through the DELETE statement.
  Check the internal table's structure and contents at runtime.
  
  
  
  Patch or SAP Notes:
  
  Check SAP Notes for any known bugs related to this message.
  Apply relevant patches or support packages if the issue is due to a system bug.
  
  
  
  
  Related Information:
  
  Message Class: W7 (System messages)
  Message Number: 7027
  ABAP Statements Involved: DELETE (internal table)
  SAP Documentation: Internal tables and DELETE statement usage
  SAP Notes: Search for W7027 or related internal table deletion issues in the SAP Support Portal.
  
  
  Example:
  DATA: itab TYPE TABLE OF mara WITH UNIQUE KEY matnr.
  
  " Fill internal table
  SELECT matnr FROM mara INTO TABLE itab UP TO 10 ROWS.
  
  " Attempt to delete an entry
  DELETE itab WHERE matnr = 'NON_EXISTENT_MATNR'.
  
  " This might raise W7027 if the key is invalid or entry does not exist
  Fix: Check if the entry exists before deleting or handle the case when no entry is found.
  
  If you provide the specific code snippet or context where this error occurs, I can help you with a more precise solution.