How To Fix /UI2/PAGEBUILDER020 - Function Module '&1' does not exist in remote system

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/PAGEBUILDER -

• Message number: 020

• Message text: Function Module '&1' does not exist in remote system

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/PAGEBUILDER020 - Function Module '&1' does not exist in remote system ?

  The SAP error message /UI2/PAGEBUILDER020 Function Module '&1' does not exist in remote system typically indicates that a function module that is expected to be available in the remote system is missing or not accessible. This error often occurs in the context of SAP Fiori applications or when using the SAP UI5 framework, where certain backend services are required for the frontend to function correctly.
  Causes:
  
  Missing Function Module: The specified function module (&1) is not defined in the remote system.
  Incorrect System Configuration: The system might not be properly configured to connect to the remote system where the function module is expected to exist.
  Transport Issues: The function module may not have been transported to the remote system.
  Authorization Issues: The user may not have the necessary authorizations to access the function module in the remote system.
  Version Mismatch: There may be a version mismatch between the systems, where the function module exists in one version but not in another.
  
  Solutions:
  
  
  Check Function Module Existence:
  
  Log into the remote system and check if the function module exists. You can do this by using transaction code SE37 (Function Module) and searching for the function module name.
  
  
  
  Transport the Function Module:
  
  If the function module is missing, ensure that it is included in a transport request and transported to the remote system.
  
  
  
  Verify System Configuration:
  
  Check the RFC (Remote Function Call) connection settings in transaction code SM59 to ensure that the connection to the remote system is correctly configured.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to execute the function module in the remote system. You can check this using transaction SU53 after attempting to execute the function.
  
  
  
  Check for Version Compatibility:
  
  Ensure that both the source and remote systems are on compatible versions of SAP. If there are significant differences, you may need to update or adjust the systems accordingly.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the application or the backend service to identify where the call to the function module is failing.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific function module or the error message.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Review the official SAP documentation for the specific Fiori application or service you are working with to ensure all prerequisites are met.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.