How To Fix GW491 - Parameter value is invalid

GW491 - Overview

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 491

• Message text: Parameter value is invalid

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message GW491 - Parameter value is invalid ?

  The SAP error message GW491, which states "Parameter value is invalid," typically occurs in the context of Gateway services, particularly when dealing with OData services in SAP. This error indicates that one or more parameters being passed to a service or function module are not valid or do not meet the expected criteria.
  Causes of GW491 Error
  
  
  Invalid Parameter Values: The parameters being sent in the request may not conform to the expected data types, formats, or value ranges defined in the OData service.
  
  
  Missing Required Parameters: If a required parameter is missing from the request, the service may not be able to process it correctly.
  
  
  Incorrect Data Types: Sending a string where a number is expected, or vice versa, can trigger this error.
  
  
  Service Definition Issues: There may be issues with the service definition itself, such as incorrect mappings or configurations.
  
  
  Authorization Issues: Sometimes, the error can be related to authorization problems where the user