# Store and Forward Items Dropped **URL:** \ **Category:** Ignition\ **Created:** [February 9, 2021, 12:19am UTC](https://forum.inductiveautomation.com/t/store-and-forward-items-dropped/43155 "2021-02-09T00:19:09Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Post date:** [February 9, 2021, 12:19am UTC](https://forum.inductiveautomation.com/t/store-and-forward-items-dropped/43155/1 "2021-02-09T00:19:09Z")
Just a few have been dropped… Not sure how to diagnose this. Also not sure what the 195% value is representing. Is that the local cache? Why would there be so many items dropped? Usually they’re a “quarantined items” retry button, but there don’t seem to be any buttons in order to resolve the 195% capacity issue ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/a/fa1f105667461972b2b6d5de4f00ecf216c3f78b.png) Getting _constant_ errors like these as well: ```auto StoreAndForward.Sink.HsqlDataStore java.io.InvalidClassException: com.inductiveautomation.ignition.common.config.BasicProperty; local class incompatible: stream classdesc serialVersionUID = 7327305604978257671, local class serialVersionUID = 8982054396802939425 at java.base/java.io.ObjectStreamClass.initNonProxy(Unknown Source) at java.base/java.io.ObjectInputStream.readNonProxyDesc(Unknown Source) at java.base/java.io.ObjectInputStream.readClassDesc(Unknown Source) at java.base/java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) at java.base/java.io.ObjectInputStream.readObject0(Unknown Source) at java.base/java.io.ObjectInputStream.readObject(Unknown Source) at java.base/java.io.ObjectInputStream.readObject(Unknown Source) at java.base/java.util.HashMap.readObject(Unknown Source) at java.base/jdk.internal.reflect.GeneratedMethodAccessor71.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) at java.base/java.io.ObjectStreamClass.invokeReadObject(Unknown Source) at java.base/java.io.ObjectInputStream.readSerialData(Unknown Source) at java.base/java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) at java.base/java.io.ObjectInputStream.readObject0(Unknown Source) at java.base/java.io.ObjectInputStream.defaultReadFields(Unknown Source) at java.base/java.io.ObjectInputStream.readSerialData(Unknown Source) at java.base/java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) at java.base/java.io.ObjectInputStream.readObject0(Unknown Source) at java.base/java.io.ObjectInputStream.defaultReadFields(Unknown Source) at java.base/java.io.ObjectInputStream.readSerialData(Unknown Source) at java.base/java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) at java.base/java.io.ObjectInputStream.readObject0(Unknown Source) at java.base/java.io.ObjectInputStream.readObject(Unknown Source) at java.base/java.io.ObjectInputStream.readObject(Unknown Source) at com.inductiveautomation.ignition.gateway.cluster.ClusterUtil.deserializeObject(ClusterUtil.java:96) at com.inductiveautomation.ignition.gateway.cluster.ClusterUtil.deserializeObject(ClusterUtil.java:56) at com.inductiveautomation.ignition.gateway.cluster.ClusterUtil.unzipAndDeserializeObject(ClusterUtil.java:90) at com.inductiveautomation.ignition.gateway.history.stores.AbstractDatasourceStore.deserializeObject(AbstractDatasourceStore.java:514) at com.inductiveautomation.ignition.gateway.history.stores.AbstractDatasourceStore.loadTransactions(AbstractDatasourceStore.java:587) at com.inductiveautomation.ignition.gateway.history.stores.AbstractDatasourceStore.syncdTakeNext(AbstractDatasourceStore.java:530) at com.inductiveautomation.ignition.gateway.history.stores.AbstractStore.takeNext(AbstractStore.java:213) at com.inductiveautomation.ignition.gateway.history.stores.MultiStageStore.syncdTakeNext(MultiStageStore.java:165) at com.inductiveautomation.ignition.gateway.history.stores.AbstractStore.takeNext(AbstractStore.java:213) at com.inductiveautomation.ignition.gateway.history.forwarders.ForwarderThread.synchedTakeNext(ForwarderThread.java:200) at com.inductiveautomation.ignition.gateway.history.forwarders.RedundancyAwareForwarder.synchedTakeNext(RedundancyAwareForwarder.java:68) at com.inductiveautomation.ignition.gateway.history.forwarders.ForwarderThread.run(ForwarderThread.java:139) ``` ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [February 9, 2021, 1:53am UTC](https://forum.inductiveautomation.com/t/store-and-forward-items-dropped/43155/2 "2021-02-09T01:53:13Z")
Did you recently upgrade Ignition versions? Or send data across versions? It’s not being ‘quarantined’ because it’s not an issue with the DB - it’s an issue with S+F/Java serialization… ---
**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Post date:** [February 9, 2021, 1:55am UTC](https://forum.inductiveautomation.com/t/store-and-forward-items-dropped/43155/3 "2021-02-09T01:55:38Z")
We upgraded from 7.9.15/16 to v8.1.0 approx 2 months ago. I didn’t notice these at the time, but I can’t say that I was looking at the logs then. ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [February 9, 2021, 1:57am UTC](https://forum.inductiveautomation.com/t/store-and-forward-items-dropped/43155/4 "2021-02-09T01:57:03Z")
Do you remember what version you upgraded from? Or, better, do you have a .gwbk from before the upgrade (and a current one) you can send in to support? ---
**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Post date:** [February 9, 2021, 1:58am UTC](https://forum.inductiveautomation.com/t/store-and-forward-items-dropped/43155/5 "2021-02-09T01:58:13Z")
Yep, I have all three. ~220 megs each backup though. I’ll create a case and upload. Cheers. Anything I can do in the meantime? ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [February 9, 2021, 2:11am UTC](https://forum.inductiveautomation.com/t/store-and-forward-items-dropped/43155/6 "2021-02-09T02:11:53Z")
You can try deleting the entry for that DB in the `datacache/` folder in the install directory - you’ll want to disable the DB/disable disk cache for it, then delete (or rename) the _entire folder_, then re-enable. _If_ it’s some kind of old data issue, then I would expect it to go away. If it’s somehow coming from in fresh, then that’ll likely tell us something as well. ---
**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Post date:** [February 9, 2021, 2:49am UTC](https://forum.inductiveautomation.com/t/store-and-forward-items-dropped/43155/7 "2021-02-09T02:49:36Z")
Well that appears to have resolved the errors in the log file. I’m not getting them anymore which I assume is good 🙂