How To Fix /SAPAPO/CIF_ERRHDLG603 - Registration of RFC unsuccessful. Last registered RFC: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CIF_ERRHDLG -

• Message number: 603

• Message text: Registration of RFC unsuccessful. Last registered RFC: &1

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 /SAPAPO/CIF_ERRHDLG603 - Registration of RFC unsuccessful. Last registered RFC: &1 ?

  The SAP error message /SAPAPO/CIF_ERRHDLG603 indicates that there was an issue with the registration of a Remote Function Call (RFC) in the context of the SAP Advanced Planning and Optimization (APO) system, specifically related to the Core Interface (CIF) between SAP APO and SAP ERP.
  
  Cause:
  The error message typically arises due to one of the following reasons:
  
  Network Issues: There may be network connectivity problems between the SAP APO system and the SAP ERP system.
  RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This includes incorrect parameters, such as the target system's hostname, system number, or client.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to perform the required operations.
  System Availability: The target system (SAP ERP) may be down or not reachable at the time of the registration attempt.
  SAP Notes: There may be specific SAP Notes that address known