How To Fix CM_EHFND_FW_FBI001 - Optimistic locking is not allowed for a GUIBB: BO &1 and node &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EHFND_FW_FBI - Message Class for Generic Feeder Classes

• Message number: 001

• Message text: Optimistic locking is not allowed for a GUIBB: BO &1 and node &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EHFND_FW_FBI001 - Optimistic locking is not allowed for a GUIBB: BO &1 and node &2 ?

  The SAP error message CM_EHFND_FW_FBI001 indicates that optimistic locking is not allowed for a specific GUIBB (Graphical User Interface Building Block) in the context of a Business Object (BO) and a specific node. This error typically arises in scenarios where the system is trying to perform an operation that involves optimistic locking, but the configuration or the context does not support it.
  Cause:
  
  
  Optimistic Locking Configuration: The error usually occurs when the system is configured to use optimistic locking, but the specific GUIBB or the underlying business object does not support it. This can happen if the business object is not designed to handle concurrent updates safely.
  
  
  Node Configuration: The specific node mentioned in the error may not be set up to allow optimistic locking, which is often used to prevent lost updates in multi-user environments.
  
  
  Data Model Issues: There may be issues with the data model or the way the business object is defined, leading to conflicts with optimistic locking mechanisms.
  
  
  Solution:
  
  
  Check GUIBB Configuration: Review the configuration of the GUIBB in question. Ensure that it is set up to support optimistic locking if that is the intended behavior. This may involve checking the properties of the GUIBB in the SAP Fiori or UI5 application.
  
  
  Review Business Object Settings: Check the settings of the underlying business object (BO) to ensure that it is configured to allow optimistic locking. This may involve looking at the data model and ensuring that the necessary fields for locking are present.
  
  
  Node Configuration: Investigate the specific node mentioned in the error message. Ensure that it is configured correctly to support optimistic locking. This may involve adjusting the node's properties or settings in the backend.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific GUIBB and business object to understand any limitations or requirements regarding optimistic locking.
  
  
  Error Handling: If optimistic locking is not required for your use case, consider modifying the application logic to handle data updates without relying on optimistic locking.
  
  
  SAP Support: If the issue persists, consider reaching out to SAP support for assistance. They may provide insights or patches that address the specific error.
  
  
  Related Information:
  
  Optimistic Locking: This is a concurrency control mechanism that allows multiple transactions to occur without locking the data. It checks for conflicts before committing changes.
  GUIBB: Graphical User Interface Building Block is a reusable UI component in SAP Fiori applications.
  Business Object (BO): Represents a business entity in SAP, encapsulating data and behavior related to that entity.
  
  By following these steps, you should be able to diagnose and resolve the error CM_EHFND_FW_FBI001 effectively.