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

DDLS450 - Overview

• 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

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DDLS450 - Details

• 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