How To Fix PU753 - Error in communication target of system &1

PU753 - Overview

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 753

• Message text: Error in communication target of system &1

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?

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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 PU753 - Error in communication target of system &1 ?

  The SAP error message PU753, which states "Error in communication target of system &1," typically indicates a problem with the communication setup between the SAP system and a target system (like an external system or another SAP instance). This error can occur in various contexts, such as when trying to send data, execute remote function calls, or perform other inter-system communications.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system.
  Configuration Errors: The communication settings (RFC destinations, logical systems, etc.) may not be correctly configured.
  Authorization Issues: The user or system may not have the necessary authorizations to communicate with the target system.
  Target System Down: The target system may be down or not reachable.
  Incorrect Parameters: The parameters used for the communication (like user credentials, ports, etc.) may be incorrect.
  Firewall Restrictions: Firewalls or security settings may be blocking the communication.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection