How To Fix B1603 - No acknowledgment received; for details see R/2 system log or R/2 EDI log

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 603

• Message text: No acknowledgment received; for details see R/2 system log or R/2 EDI log

What causes this issue?

A serious protocol error has occurred - no acknowledgement was
received.
The sending of this IDoc was terminated.

How to fix this error?

Look at the system log and the EDI log in the receiving R/2 system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1603 - No acknowledgment received; for details see R/2 system log or R/2 EDI log ?

  The SAP error message B1603, which states "No acknowledgment received; for details see R/2 system log or R/2 EDI log," typically occurs in the context of Electronic Data Interchange (EDI) processes. This error indicates that the system did not receive an acknowledgment for a message that was sent to an external system, such as an R/2 system or another EDI partner.
  Causes:
  
  Network Issues: There may be connectivity problems between the SAP system and the external system, preventing the acknowledgment from being received.
  Configuration Errors: Incorrect configuration settings in the EDI parameters or partner profiles can lead to issues in message transmission and acknowledgment.
  Processing Delays: The external system may be experiencing delays in processing the message, which can result in a delayed acknowledgment.
  Message Format Issues: If the message format does not comply with the expected standards, the external system may not process it correctly, leading to no acknowledgment.
  System Errors: There may be errors in the external system that prevent it from sending back the acknowledgment.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the SAP system and the external system. This can include checking firewalls, VPNs, and other network configurations.
  Review EDI Configuration: Verify the EDI settings in the partner profiles and ensure that they are correctly configured. This includes checking the message types, ports, and communication parameters.
  Monitor External System: Check the external system's logs to see if there are any errors or issues that might be causing the delay in acknowledgment.
  Reprocess the Message: If the message was not processed correctly, you may need to resend it or reprocess it in the SAP system.
  Consult Logs: Review the R/2 system log and R/2 EDI log for more detailed error messages or warnings that can provide insights into the issue.
  Contact Support: If the issue persists, consider reaching out to your technical support team or the support team of the external system for further assistance.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like WE02 (for monitoring EDI messages) and SLG1 (for application log) to check the status of EDI messages and logs.
  Documentation: Refer to SAP documentation for EDI configuration and troubleshooting guides to ensure that all settings are correct.
  SAP Notes: Check for any relevant SAP Notes that may address known issues related to EDI processing and acknowledgments.
  
  By following these steps, you should be able to identify the cause of the B1603 error and implement a solution to resolve it.