How To Fix WS_TOOL037 - You can only edit fields of a copied structure

SAP Error Message - Details

• Message type: E = Error

• Message class: WS_TOOL - Message Class for Web Services and Virtual Endpoints

• Message number: 037

• Message text: You can only edit fields of a copied structure

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS_TOOL037 - You can only edit fields of a copied structure ?

  SAP Error Message:
  
  WS_TOOL037: You can only edit fields of a copied structure
  
  Cause:
  This error typically occurs when you try to directly modify fields of a standard SAP structure or a structure that is not allowed to be changed directly in the context you are working in (e.g., in a Web Dynpro component, enhancement, or a tool like the Web Service Tool). SAP restricts direct editing of certain standard structures to maintain data integrity and consistency.
  In many cases, the structure you are trying to edit is a reference to a standard SAP structure that is meant to be used as a template or readonly. To make changes, you need to work on a copied or custom version of that structure.
  
  When does it occur?
  
  When editing Web Dynpro context nodes or attributes that are based on standard SAP structures.
  When trying to modify standard structures in enhancement spots or user exits.
  When using SAP tools that generate or manipulate structures and you attempt to edit the original structure instead of a copied/custom one.
  
  
  Solution:
  
  
  Copy the Structure:
  
  Instead of editing the standard SAP structure directly, create a copy of the structure.
  Use the copied structure in your application or enhancement.
  This copied structure can be modified freely without restrictions.
  
  
  
  Use Custom Structures:
  
  Define your own custom structure (Z-structure) based on the standard one.
  Add or modify fields as needed in your custom structure.
  
  
  
  Adjust Context Mapping:
  
  In Web Dynpro, if the context node is based on a standard structure, create a new context node with a copied/custom structure.
  Map the data accordingly between the standard and custom structures.
  
  
  
  Check Authorization and Object Locking:
  
  Sometimes, the error might be due to authorization or object locking issues, but primarily it is about editing standard structures.
  
  
  
  
  Related Information:
  
  SAP Note / Documentation: There might be SAP Notes related to your specific module or tool that explain restrictions on editing standard structures.
  Web Dynpro Development: When working with Web Dynpro, always create custom context nodes if you need to modify data structures.
  Enhancement Framework: Use enhancement spots or BAdIs to add fields or logic rather than modifying standard structures.
  Data Integrity: SAP enforces this restriction to prevent accidental changes to standard data definitions that could cause inconsistencies or upgrade issues.
  
  
  Summary:
  
  Cause: Attempting to edit a standard SAP structure directly.
  Solution: Copy the structure and edit the copied version instead.
  Best Practice: Use custom structures or copies for modifications to avoid this error and maintain system stability.
  
  
  If you provide the exact context (e.g., Web Dynpro, BAdI, or tool you are using), I can give more tailored advice.