How To Fix MK018 - &1 (RFC error) - return value was &2

MK018 - Overview

• Message type: E = Error

• Message class: MK - Mass Handling in the Material Master

• Message number: 018

• Message text: &1 (RFC error) - return value was &2

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 MK018 - &1 (RFC error) - return value was &2 ?

  The SAP error message MK018 indicates an RFC (Remote Function Call) error, which typically occurs when there is a problem with communication between SAP systems or between an SAP system and an external system. The message format is as follows:
  
  MK018 &1 (RFC error) - return value was &2
  
  Where &1 represents the specific RFC function or destination that encountered the error, and &2 indicates the return value or error code that was received.
  Causes of MK018 Error
  
  
  Network Issues: There may be network connectivity problems between the SAP systems or between the SAP system and the external system.
  
  
  RFC Destination Configuration: The RFC destination may not be configured correctly. This includes incorrect settings for the target system, such as the system ID, client number, user credentials, or connection type.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to execute the requested function.
  
  
  Function Module Issues: The function module