How To Fix PO890 - External RFC call of this function is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 890

• Message text: External RFC call of this function is not allowed

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message PO890 - External RFC call of this function is not allowed ?

  The SAP error message PO890, which states "External RFC call of this function is not allowed," typically occurs when there is an attempt to call a function module or method that is not designed to be executed in an external context (such as through Remote Function Call - RFC). This restriction is often in place for security or data integrity reasons.
  Causes:
  
  Function Module Restrictions: The function module you are trying to call is not marked as RFC-enabled. This means it is intended for use only within the same SAP system and cannot be called from an external system.
  Authorization Issues: The user or system making the RFC call may not have the necessary authorizations to execute the function.
  Incorrect Configuration: The RFC destination or the setup of the calling program may be misconfigured, leading to the error.
  Business Logic: The function may be designed to be executed in a specific context (like a dialog session) and not as a background or remote call.
  
  Solutions:
  
  Check Function Module: Verify if the function module is RFC-enabled. You can do this by checking the attributes of the function module in transaction SE37 or SE80. Look for the "Remote-Enabled Module" checkbox.
  Use Alternative Function: If the function is not RFC-enabled, look for an alternative function module that provides similar functionality and is RFC-enabled.
  Authorization Check: Ensure that the user or system making the call has the necessary authorizations. You can check this in transaction SU53 after the error occurs.
  Review RFC Destination: Check the configuration of the RFC destination in transaction SM59. Ensure that it is correctly set up and that the connection is working.
  Debugging: If you have access, you can debug the calling program to see where the error occurs and gather more context about the call being made.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific function module you are trying to call.
  Documentation: Review the documentation for the function module to understand its intended use and any restrictions.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP Basis or development team for further assistance.