Cancell process instance fails while trying to cancel via cockpit

[sajeeshmurali]

We have multiple process instance for same business key and because of that we wanted to cancel one of them.We try to cancel one of them via cockpit but it fails .After this failure it is not possible to cancel this process instance again via camunda cockpit as I think after this failure it has corrupted data in camunda tables.Attaching exception details and the error we get second time when we try to cancel after first failure
message: ENGINE-REST-HTTP500 org.camunda.bpm.engine.ProcessEnginePersistenceException: An exception occurred in the persistence layer. Please check the server logs for a detailed message and the entire exception stack trace.

thanks

[Dilip_Kumar]

Here’s the revised version with improved clarity and grammar:

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Hi @sajeeshmurali,

There are two options: canceling and deleting a process instance. If you have already tried canceling the process instance and are now retrying it, it will appear as follows:

Please note that when you cancel a process instance, it still remains visible. To completely remove it, you can use the delete option.