How To Fix XT669 - Transfer error between system &1 and &2

XT669 - Overview

• Message type: E = Error

• Message class: XT - Transport Management System

• Message number: 669

• Message text: Transfer error between system &1 and &2

What causes this issue?

The configuration of the Transport Management System has the two
systems <LS>&V1&</> and <LS>&V2&</> in the same transport group. This
means that the two systems access a common transport directory.
When the system checked the transport groups, it discovered that system
<LS>&V2&</> cannot read correctly a test file written by system
<LS>&V1&</> to the transport directory.
System <LS>&V1&</> created the test file with the following contents:
<LS>&V3&</>
System <LS>&V2&</> read the following contents
<LS>&V4&</>

System Response

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

How to fix this error?

Check the configuration of the systems <LS>&V1&</> and <LS>&V2&</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

XT669 - Details

• The SAP error message XT669, which indicates a "Transfer error between system &1 and &2," typically arises during data transfer processes between two SAP systems. This error can occur in various contexts, such as during IDoc processing, RFC calls, or data replication scenarios.
  Causes:
  
  Network Issues: Connectivity problems between the two systems can lead to transfer errors.
  Configuration Errors: Incorrect settings in the RFC destination or IDoc configuration can cause transfer failures.
  Authorization Issues: The user or service account may lack the necessary permissions to perform the transfer.
  Data Format Issues: The data being transferred may not conform to the expected format, leading to parsing errors.
  System Load: High load on either system can result in timeouts or dropped connections.
  Version Mismatch: Differences in SAP versions or configurations between the two systems can lead to compatibility issues.
  
  Solutions:
  
  Check Network Connectivity: Ensure that both systems can communicate over the network. Use tools like ping or traceroute to diagnose connectivity