How To Fix WT238 - Error while starting RFC: Unknown error

WT238 - Overview

• Message type: E = Error

• Message class: WT - Retail: Replenishment

• Message number: 238

• Message text: Error while starting RFC: Unknown error

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 WT238 - Error while starting RFC: Unknown error ?

  The SAP error message WT238: Error while starting RFC: Unknown error typically occurs in the context of Warehouse Management (WM) or Extended Warehouse Management (EWM) when an RFC (Remote Function Call) connection fails to start or execute properly, but the system cannot determine the exact cause, hence the "Unknown error" part.
  
  Cause
  
  
  RFC Destination Issues:
  
  The RFC destination used to connect to the remote system (or the same system) is incorrectly configured or inactive.
  The target system is down or unreachable due to network issues.
  The user credentials for the RFC destination are invalid or locked.
  
  
  
  Authorization Problems:
  
  The user assigned to the RFC destination lacks the necessary authorizations to execute the function module.
  
  
  
  System or Client Mismatch:
  
  The RFC destination points to a wrong system or client.
  The function module being called is not available or not released in the target system.
  
  
  
  Technical Issues:
  
  SAP kernel or gateway problems.
  Network interruptions or firewall blocking the connection.
  SAP Gateway service not running on the