How To Fix 37056 - Unable to delete loop line

37056 - Overview

• 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.

37056 - Details

• 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