How To Fix 37056 - Unable to delete loop line

SAP Error Message - Details

• Message type: E = Error

• Message class: 37 - Screen Painter

• Message number: 056

• Message text: Unable to delete loop line

What causes this issue?

You cannot delete a line within a loop because this would change the
structure of the loop block.

How to fix this error?

To delete a line, dissolve the loop first, delete the line, and then
regenerate the loop.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 37056 - Unable to delete loop line ?

  The SAP error message 37056, "Unable to delete loop line," typically occurs in the context of managing loops in the SAP system, particularly when dealing with data structures like internal tables or when processing certain transactions that involve hierarchical data.
  Cause:
  The error usually arises due to one of the following reasons:
  
  Data Integrity Issues: The loop line you are trying to delete may be part of a data structure that is currently being referenced elsewhere, leading to integrity constraints.
  Locked Entries: The entry you are trying to delete might be locked by another user or process, preventing modifications.
  Incorrect Logic in Code: If you are working with ABAP code, there might be logical errors in the way the loop is being handled, such as trying to delete an entry that does not exist or is not properly indexed.
  Hierarchy Constraints: In hierarchical data structures, certain nodes may not be deletable if they have child nodes or if they are part of a mandatory structure.
  
  Solution:
  To resolve the error, you can try the following steps:
  
  
  Check Data Integrity: Ensure that the loop line you are trying to delete is not being referenced elsewhere in the system. You may need to check for dependencies or relationships with other data entries.
  
  
  Release Locks: If the entry is locked, you can check for active sessions or processes that might be holding the lock. You can use transaction codes like SM12 to view and manage locks.
  
  
  Review ABAP Code: If you are working with custom ABAP code, review the logic to ensure that you are correctly identifying the loop line to delete. Make sure that the index or key used to reference the line is valid.
  
  
  Check Hierarchical Structure: If the loop line is part of a hierarchical structure, ensure that it does not have any child nodes or dependencies that would prevent its deletion. You may need to delete child nodes first.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details related to the transaction or data structure you are working with.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE80 (Object Navigator), SE37 (Function Module), or SE38 (ABAP Editor) for debugging and analyzing the code.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.