How To Fix /IWFND/CM_MGW_RT157 - Type of data container returned by DPC is wrong. '&1' is expected

/IWFND/CM_MGW_RT157 - Overview

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 157

• Message text: Type of data container returned by DPC is wrong. '&1' is expected

Self-Explanatory Message

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/IWFND/CM_MGW_RT157 - Details

• The SAP error message /IWFND/CM_MGW_RT157 indicates that there is a mismatch in the type of data container returned by the Data Provider Class (DPC) in an OData service. Specifically, the error message states that the expected type of data container is not being returned, which can lead to issues in data processing and rendering.
  
  Cause:
  
  Incorrect Data Type: The DPC is returning a data type that does not match the expected type defined in the service metadata. This could happen if the DPC is incorrectly implemented or if there are changes in the data model that have not been reflected in the DPC.
  Model Changes: If there have been recent changes to the underlying data model (e.g., changes in the database tables or structures) that are not reflected in the OData service, this can lead to type mismatches.
  Service Definition Issues: The service definition (e.g., the service metadata) may not be correctly aligned with