How To Fix PU745 - Target system &1.&2 rejects calls from system &3.&4

PU745 - Overview

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 745

• Message text: Target system &1.&2 rejects calls from system &3.&4

What causes this issue?

System &V1&.&V2& was called by system &V3&.&V4&. The target system does
not recognize the source system &V3&.

System Response

The function is canceled.

How to fix this error?

You must register system &V1&.&V2& with system &V3&.&V4&. You can do
this in one of the following ways:
You can link the domains using a domain link.
You can add the target system to the domain of the source system.
Only when using Central CTS in SAP Solution Manager:
Central CTS can work with all systems registered in the Landscape
Management Database (LMDB) of SAP Solution Manager.
Check the configuration of system &V1&.&V2& in the LMDB and correct it
if necessary. For more information, see the LMDB documentation under
"Registering Technical Systems in LMDB" on the SAP Help Portal under
http://help.sap.com/solutionmanager. Search for the relevant
documentation for your release.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PU745 - Target system &1.&2 rejects calls from system &3.&4 ?

  The SAP error message PU745 indicates that the target system is rejecting calls from the source system. This typically occurs in scenarios involving remote function calls (RFC) or when trying to access a system via a connection that has not been properly configured or authorized.
  
  Cause:
  
  Authorization Issues: The user or system trying to make the call does not have the necessary authorizations in the target system.
  Connection Configuration: The RFC destination may not be correctly configured, or the target system may not be set up to accept calls from the source system.
  Network Issues: There may be network problems preventing the source system from reaching the target system.
  System Status: The target system may be in a state that does not allow it to accept calls (e.g., it may be down for maintenance).
  Client-Specific Settings: The target system may have client-specific settings that restrict access from certain clients or systems.
  
  
  Solution:
  
  Check Authorizations: Ensure that the user