How To Fix W3_TOOL091 - The & function is not an RFC module

SAP Error Message - Details

• Message type: E = Error

• Message class: W3_TOOL - ITS: Maintenance Messages

• Message number: 091

• Message text: The & function is not an RFC module

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W3_TOOL091 - The & function is not an RFC module ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W3_TOOL091 The & function is not an RFC module
  
  
  Cause:
  This error occurs when a function module that is expected to be an RFC (Remote Function Call) enabled module is not actually flagged as RFC-enabled in the SAP system. In other words, the system is trying to call a function module remotely (via RFC), but the function module does not have the "Remote-Enabled Module" attribute set.
  The placeholder & in the message will be replaced by the actual function module name when the error occurs.
  
  Explanation:
  
  RFC modules are function modules that are explicitly enabled for remote calls.
  If a function module is not marked as remote-enabled, it cannot be called from outside the SAP system or from other SAP systems.
  This error typically arises during integration scenarios, such as when using SAP Web Services, SAP PI/PO, or any external system trying to call an SAP