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

B1603 - Overview

• 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.

B1603 - Details

• 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