How To Fix CL_SADL_GW_MDE_MSGX049 - Expected expression type is " & ". Property " & ".

CL_SADL_GW_MDE_MSGX049 - Overview

• Message type: E = Error

• Message class: CL_SADL_GW_MDE_MSGX - texts for parser

• Message number: 049

• Message text: Expected expression type is " & ". Property " & ".

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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CL_SADL_GW_MDE_MSGX049 - Details

• The SAP error message CL_SADL_GW_MDE_MSGX049 typically indicates an issue related to the expected expression type in the context of the SAP Gateway and the Model Driven Entity (MDE) framework. This error often arises when there is a mismatch between the expected data type and the actual data type being processed in a query or operation.
  
  Cause:
  
  Data Type Mismatch: The error usually occurs when the system expects a certain type of expression (e.g., a specific data type or structure) but receives something different. This can happen in scenarios involving OData services, where the data types defined in the service do not match the types being sent or received.
  Incorrect Model Definition: If the data model is not correctly defined or if there are inconsistencies in the metadata, it can lead to this error.
  Query Issues: If a query is constructed incorrectly, such as using an unsupported operation or incorrect syntax, it can trigger this