can you switch the parameters in the function ? second parameter will be a listString and the first one will be a string not(in( 'DFC', <ListString> ))

You will have to use it on the following lines not(in(#{ExperiencePlatform.ProfileFieldGroup.profile.person.gender}, ["male"])) https://experienceleague.adobe.com/en/docs/journey-optimizer/using/orchestrate-journeys/building-advanced-conditions-journeys/main-functions-journey/list/functionin 

You can take a look at the Business events feature if that helps solve your use case https://experienceleague.adobe.com/en/docs/journey-optimizer-learn/tutorials/create-journeys/use-case-business-event 

Yes, it is

Indeed, looks to be a documentation error which I see has been updated now.  

Kindly take a look at the following note https://experienceleague.adobe.com/en/docs/journey-optimizer/using/content-management/personalization/lookup-aep-data  Dataset lookup is currently not supported in fragments.  

You can use the following expression to filter those profiles that have 'asd.com' as the email domain valuecontainIgnoreCase(serializeList(#{ExperiencePlatform.ProfileFieldGroup.profile.identityMap.entry('email').id}, "|", true),'@asd.com') 

Yes, that's feasible by specifying the attribute as a variablehttps://experienceleague.adobe.com/en/docs/journey-optimizer/using/configuration/configure-journeys/action-journeys/about-custom-action-configuration 

Following are the enum values that you will find against the "_experience.customerJourneyManagement.messageDeliveryfeedback.feedbackStatus" attribute in message feedback event schema  

You can take a look at the note and the tutorial in this documentation https://experienceleague.adobe.com/en/docs/journey-optimizer/using/configuration/configure-journeys/events-journeys/about-events https://experienceleague.adobe.com/en/docs/journey-optimizer/using/configuration/configure-journeys/...