How To Fix WS_TOOL029 - Could only add fields

WS_TOOL029 - Overview

• Message type: E = Error

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

• Message number: 029

• Message text: Could only add fields

Self-Explanatory Message

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WS_TOOL029 - Details

• SAP Error Message:
  WS_TOOL029 Could only add fields
  
  
  Cause:
  The error message WS_TOOL029 Could only add fields typically occurs in the context of SAP Web Dynpro or Web Services tool when you are trying to perform an operation that is restricted to adding fields only, but the system detects an attempt to perform an unsupported operation such as modifying or deleting fields.
  In other words, the tool or environment expects that only new fields can be added to a structure or interface, but the current operation tries to do more than just adding fields (e.g., changing existing fields or removing them), which is not allowed.
  This often happens during:
  
  Modifications of Web Dynpro component interfaces or context nodes.
  Changes in Web Service definitions or data structures where only additive changes are permitted.
  Attempts to change the structure of an interface or data element in a way that is incompatible with the tool’s constraints.
  
  
  
  Solution:
  
  
  Check the Operation Being Performed:
  Ensure that