Nag, What versions of the SDK are you using?  The Visitor ID is available in all modern versions of the SDKs.  Documentation can be found here.   Can you also please contact Client Care so that we can investigate your issues surrounding hits not being sent, this is not intended behavior and is somet...

Dhana, If you use the track/trackLink call, they both support an additional dictionary of key value pairs called "variableOverrides".  This dictionary allows you to bulk-set any of the standard vars for that call only, using their standard names (eVar1, prop2, etc).  This would get you the benefit o...

Dhana, Give your sequence of events, I'd recommend a slight modification:1. call setPersistentContextData to set the data that will be common across all calls.2. invoke track/trackLink and send the call-specific evars/props as part of the variable overrides dictionary. This will ensure that the evar...

Dhana, clearVars() is intended to be used to reset all "persistent state" variables, i.e. variables set with the setEvar/setProp/etc calls.  We would strongly recommend that you use the track methods that package the data with the call (trackAppState to attach context data, or track to attach contex...

Nag, The iOS library will record crashes in a similar fashion as long as the lifecycle events are being captured. Regards, Peter FransenMobile Engineering Team Lead

Nag arjun, The iOS library does not capture stack traces, it merely detects when a crash has occurred and increments the crash metric.  We are investigating providing full crash logs in a future release, but we do not have that functionality at this time. -pete

You can also use the Mobile Services interface (http://mobilemarketing.adobe.com) to download the SDK for your specific application, and the .JSON file will be preconfigured for you with all of the required settings for your report suite. -pete

Jeff,Please open a ticket with Client Care so we can get this issue resolved for you. Regards,Peter FransenAdobe Marketing Cloud - Mobile Engineering Team Lead

Jeff, Are you sending the data to the same report suite as qa/dev/stage, or are you switching the targeted report suite at the same time?  If so, you may have a timestamp/offline mismatch (Just like Cory did above).   In cases like this it may be a faster resolution for you to contact Client Care di...

Cory,The iOS hits are not timestamped (i.e., offlineTracking is set to false), whereas your Android hits are timestamped (meaning offlineTracking is set to true).  The reason you're seeing data for one and not for the other is due to the fact that the report suite configuration must matched the impl...