Repeating Alerts from UDF for same error (message ID)

Hi Experts,

We have created a UDF that validates and incoming message and triggeres an alert if the validation rules are not met. The problem is that we are receiving several alerts for the same error (message ID), even after setting the "Max. No. Of Dels" option on the Alert Category in transaction ALRTCATDEF. It wasn't necessary to create a alert rule for this in the RWB because the alert is triggered directly inside the UDF. The max number of retries on the SOAP adapter has also been set to 1 but we are still getting repeating alerts for the same error (message ID).

If someone has encountered a similar problem in the past, please can you share the solution?

Thanks and regards,

Brendon