How To Fix PPC1DM320 - Communication error during RFC in the target system &1

PPC1DM320 - Overview

• Message type: E = Error

• Message class: PPC1DM - PP Backflush: Database Management and Communication

• Message number: 320

• Message text: Communication error during RFC in the target system &1

What causes this issue?

You want to compare data from the ERP System with data from the APO. To
do this, the system must read data form the APO System using an RFC. An
error occurred when the system accessed the logical destination &V1&.

System Response

The affected records cannot be compared.

How to fix this error?

Check the RFC connection between the current ERP System and the APO
destination &v1& over the following menu path:
<DS:TRAN.SM59>Tools -> Administration -> Administrative Data -> Network
-> RFC Destination</>

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.

PPC1DM320 - Details

• The SAP error message PPC1DM320, which indicates a "Communication error during RFC in the target system &1," typically arises when there is an issue with the Remote Function Call (RFC) communication between SAP systems. This can occur in various scenarios, such as during data transfer, system integration, or when executing remote function modules.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP systems can lead to communication errors. This could be due to firewalls, routing issues, or network outages.
  RFC Destination Configuration: The RFC destination in the source system may not be configured correctly. This includes incorrect connection parameters, such as the target system's hostname, port, or logon credentials.
  Target System Availability: The target SAP system may be down or not reachable due to maintenance or other issues.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to perform the requested operation.
  SAP Kernel or Software Issues: