DDLS450 - Input parameter &: & is a generated proxy type and cannot be used

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 450

• Message text: Input parameter &: & is a generated proxy type and cannot be used

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS450 - Input parameter &: & is a generated proxy type and cannot be used ?

  The SAP error message DDLS450 indicates that there is an issue with the use of a generated proxy type in your ABAP code or configuration. This error typically arises when you are trying to use a proxy type that has been generated by the SAP system, but the system does not allow it to be used in the context you are attempting.
  Cause:
  
  Generated Proxy Type: The error occurs because the input parameter you are trying to use is a generated proxy type, which is not allowed in certain contexts. Generated proxy types are typically created for web services or other external interfaces and may have restrictions on how they can be used.
  Incorrect Usage: You might be trying to pass a generated proxy type to a function module, method, or interface that does not accept it as a valid input parameter.
  Version Mismatch: There could be a mismatch between the versions of the proxy and the service or function you are trying to call.
  
  Solution:
  
  Check Parameter Types: Review the definition of the function module, method, or interface you are calling. Ensure that the input parameters are compatible with the types you are passing. If the function does not accept generated proxy types, you may need to convert the proxy type to a compatible type.
  Use Compatible Types: If you need to pass data to a function that does not accept the generated proxy type, consider creating a compatible structure or data type that matches the expected input.
  Regenerate Proxy: If the proxy type is outdated or incorrectly generated, you may need to regenerate it. This can be done through the relevant transaction (e.g., SOAMANAGER for web services).
  Check Documentation: Refer to the SAP documentation for the specific function or method you are using to understand the expected input types and any restrictions on using generated proxy types.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to the specific error message DDLS450. SAP Notes often provide patches or workarounds for common issues.
  ABAP Development: Familiarize yourself with ABAP development best practices, especially when dealing with web services and proxy types. Understanding how to handle data types and structures in ABAP can help prevent such errors.
  Testing: If possible, create a test case to isolate the issue. This can help you understand the context in which the error occurs and allow you to experiment with different approaches to resolve it.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.