Hi Harry,
Please check the option in sender channel in processing tab for Duplicate Handling.
Please check the SAP documentation about the paramter
Define Duplicate Handling Settings
- If you want to control the processing of the duplicate messages, select Enable Duplicate Handling, and then perform the following steps:
- Enter a value in the Duplicate Message Alert Threshold textbox.
System notifies the user with an alert message (warning) at the first occurrence of the duplicate message and stops processing these messages. In addition, it notifies the user with an alert message (error) with the n+1 duplicate message occurrence.
- If you want to disable the channel after the duplicate threshold is exceeded, select Disable Channel If Threshold Exceeded.
- The duplicate message is identified by the last modified time stamp of the file.
- This feature increases the robustness by avoiding the processing of duplicate messages. It also provides flexible threshold configuration and channel deactivation (if threshold exceeds) options.
Link - Configuring the Sender File Adapter - Advanced Adapter Engine - SAP Library
regards,
Harish