How To Fix /IWFND/CM_DESIGNTIME125 - Type of structure component '&1' not supported

/IWFND/CM_DESIGNTIME125 - Overview

• Message type: E = Error

• Message class: /IWFND/CM_DESIGNTIME -

• Message number: 125

• Message text: Type of structure component '&1' not supported

Self-Explanatory Message

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/IWFND/CM_DESIGNTIME125 - Details

• The SAP error message /IWFND/CM_DESIGNTIME125 with the description "Type of structure component '&1' not supported" typically occurs in the context of SAP Gateway and OData services. This error indicates that there is a problem with the definition of a structure component in your OData service, specifically that the type of one of the structure components is not supported by the OData framework.
  Causes:
  
  Unsupported Data Types: The structure component may be using a data type that is not supported by the OData service. For example, certain complex types or custom types may not be recognized.
  Incorrect Mapping: There may be an issue with how the data types are mapped in the service definition.
  Incompatible Structures: If the structure is derived from a database table or view that contains unsupported types, this error can occur.
  Changes in Data Model: If there have been recent changes to the underlying data model (like adding new fields or changing