How To Fix SHDB_PFW721 - External RFC call of &1 not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: SHDB_PFW -

• Message number: 721

• Message text: External RFC call of &1 not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SHDB_PFW721 - External RFC call of &1 not allowed ?

  The SAP error message SHDB_PFW721, which states "External RFC call of &1 not allowed," typically occurs when there is an attempt to execute a function module or RFC (Remote Function Call) that is not permitted to be called externally. This restriction is often in place for security reasons or to maintain system integrity.
  Cause:
  
  Security Restrictions: The function module or RFC you are trying to call is designed to be used internally within the SAP system and is not intended for external calls.
  Configuration Settings: The function module may have been configured to restrict external access, either by design or due to specific security policies.
  Authorization Issues: The user or system making the call may not have the necessary authorizations to execute the function module externally.
  
  Solution:
  
  
  Check Function Module Attributes:
  
  Go to transaction SE37 (Function Module) and enter the name of the function module that is causing the error.
  Check the attributes of the function module. Look for the "Remote-Enabled Module" checkbox. If it is not checked, the function cannot be called externally.
  
  
  
  Use an Alternative Function:
  
  If the function module is not meant for external calls, look for an alternative function module that is designed for external use.
  
  
  
  Modify Security Settings:
  
  If you have the necessary authorizations and it is appropriate to do so, you can modify the function module to allow external calls. This should be done with caution and typically requires approval from your SAP security team.
  
  
  
  Check User Authorizations:
  
  Ensure that the user or system making the RFC call has the necessary authorizations. You can check this in transaction SU53 (Authorization Check) after the error occurs.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation or notes related to the specific function module to understand its intended use and any restrictions.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for further assistance, especially if this is a critical function for your business processes.
  
  
  
  Related Information:
  
  Transaction Codes: SE37 (Function Module), SU53 (Authorization Check), SE80 (Object Navigator).
  RFC Calls: Understand the difference between synchronous and asynchronous RFC calls and their respective use cases.
  SAP Notes: Search for relevant SAP Notes that may provide additional insights or solutions related to this error message.
  
  Always ensure that any changes made to function modules or security settings are thoroughly tested in a development environment before being applied to production systems.