How To Fix WS_TOOL022 - Did not change parameter type, since type & is not of & original type

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 022

• Message text: Did not change parameter type, since type & is not of & original type

What causes this issue?

The type of a parameter in a virtual interface is to be changed. Here
you may only use types that point to the same original type of
parameter. The specified type already exists and has another original
type.

System Response

The parameter type has not been changed.

How to fix this error?

Enter a type that does not yet exist. Then a new type will be created
with the correct original type or specify a type that has the same
original type as the parameter.
You have a type overview under the tab 'Type Mapping'. There you can
also copy types.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WS_TOOL022 - Did not change parameter type, since type & is not of & original type ?

  The SAP error message:
  WS_TOOL022: Did not change parameter type, since type & is not of & original type
  
  Cause
  This error occurs when you try to change the data type of a parameter in a function module, method, or interface, but the new data type is incompatible with the original data type. SAP does not allow changing the parameter type if it violates the original type constraints, to maintain consistency and avoid runtime errors.
  For example, if the original parameter was defined as a simple data type (like CHAR or INT), and you try to change it to a complex type (like a structure or table), or vice versa, SAP will raise this error.
  
  Explanation
  
  The message indicates that the system detected an attempt to change the parameter type.
  The first placeholder & is the new type you tried to assign.
  The second placeholder & is the original type of the parameter.
  Since the new type is not compatible with the original type, the system refuses to make the change.
  
  
  Typical Scenarios
  
  Changing the parameter type in a function module interface.
  Modifying method parameters in a class or interface.
  Changing parameter types in BAPIs or RFC-enabled function modules.
  Trying to change a parameter from elementary type to structure/table or vice versa.
  
  
  Solution
  
  
  Check the original parameter type:
  
  Go to the function module or method interface.
  Check the original data type of the parameter.
  
  
  
  Ensure compatibility:
  
  If you want to change the parameter type, make sure the new type is compatible with the original type.
  For example, changing from one elementary type to another compatible elementary type (e.g., CHAR length 10 to CHAR length 20) might be allowed.
  Changing from elementary to structure or table type is not allowed.
  
  
  
  If a change is necessary:
  
  Consider creating a new parameter with the desired type instead of changing the existing one.
  Alternatively, create a new function module or method with the new parameter definition.
  If the parameter is part of a standard SAP object, avoid changing it directly; instead, use extension techniques or wrapper function modules.
  
  
  
  Transport and consistency:
  
  After making changes, ensure that the changes are consistent and transported properly.
  Check for dependent objects that might be affected by the parameter type change.
  
  
  
  
  Related Information
  
  SAP Note: Check for any SAP Notes related to WS_TOOL022 for specific patches or updates.
  SAP Help Portal: Documentation on function module and method parameter definitions.
  ABAP Development Guidelines: Best practices for changing interfaces and parameters.
  Use transaction SE37 (Function Builder) or SE24 (Class Builder) to inspect and modify parameters carefully.
  If working with BAPIs, refer to BAPI documentation for allowed changes.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WS_TOOL022: Did not change parameter type, since type & is not of & original type
  
  
  Cause
  Attempt to change parameter type to an incompatible type
  
  
  Solution
  Ensure new type is compatible; create new parameter or new function/module if needed
  
  
  Tools
  SE37, SE24, ABAP Editor
  
  
  Precautions
  Avoid changing standard SAP interfaces directly; use extensions or wrappers
  
  
  
  
  If you provide the exact context (function module name, parameter name, old and new types), I can help you with a more specific solution.