Symptoms
You may have a requirement to build a workflow with support for multiple languages. With the UI built with K2 smartforms it is possible to create a multilingual form, but the workflow itself does not allow to configure/customize task actions for the approver so that depending on the language of the approver he can see "Approve" (in English), or "Genehmigen" (in German) to action on the tasks.
Diagnoses
Unfortunately K2 does not allow to do this at the moment and there is an existing feature request to investigate possibility of implementing this in the future releases of K2.
Resolution
K2 does not allow to do this at the moment and there is an existing feature request to investigate possibility of implementing this in the future releases of K2.