How To Fix 56766 - Transfer to target system failed, error in communication setup

56766 - Overview

• Message type: E = Error

• Message class: 56 - HR TRAVEL: Messages for Trip Costs Dialog

• Message number: 766

• Message text: Transfer to target system failed, error in communication setup

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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56766 - Details

• The SAP error message 56766, which states "Transfer to target system failed, error in communication setup," typically indicates an issue with the communication configuration between the source and target systems in an SAP landscape. This error can occur during various operations, such as data transfer, system replication, or remote function calls (RFC).
  Causes:
  
  Incorrect RFC Destination Configuration: The RFC destination may not be set up correctly in the source system, leading to communication failures.
  Network Issues: There may be network connectivity problems between the source and target systems, such as firewalls blocking the connection or incorrect IP addresses.
  Authorization Issues: The user credentials used for the connection may not have the necessary authorizations to perform the operation.
  Target System Unavailability: The target system may be down or not reachable due to maintenance or other issues.
  Incorrect Parameters: The parameters used in the communication setup (like ports, protocols) may be incorrect.
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in