How To Fix IL198 - Change only the last hierarchy level

SAP Error Message - Details

• Message type: E = Error

• Message class: IL - PM: ILOM - Functional Locations

• Message number: 198

• Message text: Change only the last hierarchy level

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IL198 - Change only the last hierarchy level ?

  The SAP error message IL198, which states "Change only the last hierarchy level," typically occurs in the context of working with hierarchical data structures in SAP, such as when managing bills of materials (BOMs) or other hierarchical master data.
  Cause:
  This error arises when a user attempts to make changes to a node in a hierarchy that is not the last level (leaf node). In hierarchical structures, only the lowest level (the last hierarchy level) can be modified directly. Changes to higher levels or parent nodes may affect the entire structure and are therefore restricted to maintain data integrity.
  Solution:
  To resolve the IL198 error, follow these steps:
  
  
  Identify the Hierarchy Level: Check the hierarchy structure to determine which level you are trying to modify. Ensure that you are attempting to change a leaf node.
  
  
  Navigate to the Last Level: If you need to make changes, navigate down to the last level of the hierarchy where modifications are allowed.
  
  
  Make Changes at the Leaf Node: Perform the necessary changes at the leaf node. If you need to change attributes or properties of a parent node, consider whether you can achieve your goal by modifying the child nodes instead.
  
  
  Use the Correct Transaction: Ensure you are using the appropriate transaction code for the task you are trying to accomplish. For example, if you are working with BOMs, use transaction codes like CS01 (Create BOM), CS02 (Change BOM), or CS03 (Display BOM) as needed.
  
  
  Consult Documentation: If you are unsure about the hierarchy structure or the specific changes you need to make, refer to SAP documentation or consult with a colleague who has experience with the specific module you are working on.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to IL198 or the module you are working with. SAP Notes often provide additional context or solutions for specific issues.
  Training and Documentation: If you frequently work with hierarchical data, consider undergoing training or reviewing documentation related to the specific SAP module (e.g., SAP PP for production planning, SAP MM for materials management).
  User Permissions: Ensure that you have the necessary permissions to make changes in the system. Sometimes, restrictions may be in place based on user roles.
  
  By following these steps, you should be able to resolve the IL198 error and make the necessary changes to your hierarchical data in SAP.