How To Fix PPC1DM321 - System error in RFC in the target system &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 321

• Message text: System error in 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 from the APO System using an RFC. A
system error occurred in the APO target system &v1& when the system
accessed the function module BAPI_PPC_HDR_FLAG_READ. The following error
text was displayed:
&v2&&v3&

System Response

The affected data cannot be compared.

How to fix this error?

Depends on the content of the error text.

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 PPC1DM321 - System error in RFC in the target system &1 ?

  The SAP error message PPC1DM321, which indicates a "System error in RFC in the target system &1," typically arises during Remote Function Call (RFC) communication between SAP systems. This error can occur due to various reasons, and understanding the cause is crucial for troubleshooting and resolving the issue.
  Possible Causes:
  
  Network Issues: There may be network connectivity problems between the source and target systems, leading to failed RFC calls.
  Configuration Errors: Incorrect configuration of the RFC destination in the SAP system can lead to this error. This includes issues with the connection parameters or the target system's settings.
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations in the target system.
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  Resource Limitations: The target system may be experiencing resource limitations (e.g., memory, CPU) that prevent it from processing the RFC request.
  Transport Layer Issues: Problems with the transport layer (e.g., SAProuter) can also lead to RFC errors.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the source and target systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination Configuration:
  
  Go to transaction SM59 in the source system.
  Check the configuration of the RFC destination pointing to the target system.
  Test the connection using the "Test Connection" button to see if it succeeds.
  
  
  Review Authorizations: Ensure that the user used for the RFC call has the necessary authorizations in the target system. You can check this in transaction SU01.
  Check Target System Status: Verify that the target system is up and running. You can check the system status in transaction SM51 or by logging into the target system directly.
  Monitor System Resources: Check the performance and resource usage of the target system. Use transaction SM04 or ST02 to monitor memory and performance issues.
  Review SAP Notes: Check for any relevant SAP Notes that may address known issues related to this error message. You can search for notes in the SAP Support Portal.
  Check Logs: Review the system logs in both the source and target systems for any additional error messages or warnings that could provide more context about the issue. Use transaction SM21 for system logs and ST22 for dump analysis.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for more details on RFC and troubleshooting RFC-related issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists and you have a support contract, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the root cause of the PPC1DM321 error and implement an appropriate solution.