The timestamp field in AEP requires an ISO date format timestamp (https://datatracker.ietf.org/doc/html/rfc3339#section-5.6).  YYYY-MM-DDTHH:mm:ssZ.  I ensure your date function uses date(DATE, FORMAT, DEFAULT_DATE) or date(DATE, FORMAT) converts the date string into an an ISO 8601 format.

Also please provide the payload which you are posting data to the dataSet which has been marked for upSert

Hello Arpan, Can you send the details of your dataSet which you are posting to?  Please provide the /GET results of the dataSet your posting to. Thanks,Bryan

Hi @_abs9900   You can use the data prep function to create a guid. this can be used in the data prep functions when ingesting data. Check out the special operations for guid https://experienceleague.adobe.com/docs/experience-platform/data-prep/functions.html%3Flang%3Dsv#special-operations 

Hello  Have you considered using the GUID function when creating the UUID. This function will create a unique 38 char value for ingestion. Please let me know if this works.ThanksBryan

Yes, please include me as well.

Hello Everyone,   Happy Monday.  Checking in with the group.    @Corban  @Shivani_Nigam  @anjuthakur010788  @AvinashGupta01  @hgreenberg  Can each of you share where you are at with your training? Do you have any roadblocks or questions which I can help answer?

Happy Friday everyone,   With folks who are getting started with AEP I would recommended reviewing the following page.   https://experienceleague.adobe.com/docs/platform-learn/tutorials/overview.html?lang=en   I would also encourage you to use the API first for the some of the tutorials. You can do ...

Hello Everyone,   Happy to be on this journey with you to achieve your AEP certification.  Please use this thread to ask questions.  If needed to we can schedule a call to review items.    Thanks, Bryan

Hello Nimasha,   I would like to be considered as a mentor if this is still open.   Thanks, Bryan