How To Fix /UI2/CAT_PROV_700004 - Error during existence check of function module &1 at RFC destination &2

/UI2/CAT_PROV_700004 - Overview

• Message type: E = Error

• Message class: /UI2/CAT_PROV_700 -

• Message number: 004

• Message text: Error during existence check of function module &1 at RFC destination &2

Self-Explanatory Message

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/UI2/CAT_PROV_700004 - Details

• The SAP error message /UI2/CAT_PROV_700004 indicates that there was an error during the existence check of a function module at a specified RFC (Remote Function Call) destination. This error typically arises in the context of SAP Fiori or UI5 applications when the system is trying to access a function module that is either not available or not properly configured in the specified RFC destination.
  Causes:
  
  Function Module Not Found: The specified function module does not exist in the target system.
  RFC Destination Issues: The RFC destination may not be correctly configured, or it may point to an incorrect system.
  Authorization Issues: The user may not have the necessary authorizations to access the function module in the target system.
  Network Issues: There could be network connectivity issues between the systems involved.
  Transport Issues: The function module may not have been transported to the target system.
  
  Solutions:
  
  
  Check Function Module Existence:
  
  Log into the target system (the one specified in the