How To Fix /IWBEP/CM_V4_RUNTIME020 - Data service request is required to be conditional; try using If-Match

/IWBEP/CM_V4_RUNTIME020 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_V4_RUNTIME -

• Message number: 020

• Message text: Data service request is required to be conditional; try using If-Match

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_RUNTIME020 - Data service request is required to be conditional; try using If-Match ?

  The SAP error message /IWBEP/CM_V4_RUNTIME020 indicates that a data service request is required to be conditional, and it suggests using the If-Match header. This error typically occurs in the context of OData services when a client attempts to perform an operation (like an update or delete) on a resource without providing the necessary conditional headers.
  
  Cause:
  The error is caused by the following scenarios:
  
  Missing Conditional Header: The request does not include the If-Match header, which is necessary for conditional requests. This header is used to ensure that the operation is performed only if the resource has not been modified since the client last retrieved it.
  Optimistic Locking: The OData service is configured to use optimistic locking, which requires the client to provide the current version of the resource (usually in the form of an ETag) to prevent overwriting changes made by other clients.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Include the